- Unveiled Mystery Part 2: Season premiere.
- Abra-Kadabra!: Abra reunites with a long-lost sibling responsible for an incident of her past.
- Better Power: Beautifast and Blinkie determine who is the better hero.
- Super Servant: After accidentally injuring Splendid, Leslie steps up her hero game.
- White as a Ghost!: Branchy's sister comes back as a ghost.
- The Costume Ball: Petunia goes to a costume party.
- No More Deaf: Abra gets a new pair of ears.
- Poof of Purchase: After she and Trixie accidentally switch wands, Abra brings a rabbit doll to life and thrusts herself into the challenges of parenthood.
- Glass Eyed and Beaver Tailed: Toothy gets an eye upgrade, that belonged to someone else.
- From Musk to Paws: Solaris messes with Paws.
- Inn of Imagination: Draco takes in numerous "imaginary" friends when their owners die. What he didn't think about was The Dragon coming to spill imaginary blood!
- A-hee-ahee Ha-hee!: What does the fox say?
- Look But Don't Touch: Brian causes an epidemic of horrible rashes by going on a touching spree.
- Solaris Eclipsed: Solaris begins acting different... in a good way.
- Mother of Magic: Abra introduces Poof to the family.
- Tricks Up My Sleeve: Kadabra spruces up his magic tricks with the help of Solaris, but she ends up stealing the show.
- The Garden of Raymond: A magic accident with Cascade turns her into an even bigger plant than before.
- Be a Fan: Petunia is a big fan of Beautifast. When she gets her photograph with her, Beautifast ends up twisting her ankle and Petunia has to take over on stopping a giant squid attack.
- Squirreling Away: An odd red squirrel steals Nutty's sweet treats.
- Face the Wrath: Havoc ensues with Solaris and Beautifast.
- Tops of The Flops: Floppy (CCF) picks a fight with two aliens (Paws and Sunset).
- Greasy Spoon: What happens when an amateur chef and a greasy gopher make food together?
- A Tea Bash: Suey, yet another character prone to flip outs, is introduced in this episode.
- Mink the Mighty: Phobia learns a lesson in scaring when he meets Marley, a mink with no fear.
- A New Kind of Odd: Oddity wraps herself in a cocoon and emerges anew.
- You Dirty Rat!: Fungus, Tromp, Rotty, and Brass deal with a rat who takes over their dumpster.
- Slend a Hand: Slender Loris finds out he's both a meme and a laughingstock when he haunts a movie theatre.
- That Wily Canine!: Spindly attempts to catch Flighty using increasingly complicated traps.
- Sniped Away: Abra gives Poof a haircut.
- Unfair Weather Friends: Petunia's picnic with friends is ruined by a windy day.
- A Fishy Disaster: Scrunchy debuts in this episode.
- The Run Fun: Tufty tries to run away from fat guys.
- Better Hot Than Ever: Toothy becomes a fire-breathing beaver.
- The Love of Poison: A tale of Snow White, starring Snowdrop and featuring Underwear.
- Got Any Grapes?: Quacko loses his temper over getting yelled at for asking for grapes at a lemonade stand.
- Gypsy for You: Cranky is not really "cranky" for once thanks to a certain beautiful gypsy.
- Loves Me, Kills Me Not: Freckle the purring cat and Minty fight over Pastel.
- Aquactic Fear: Quacko suddenly develops a fear of water after encountering the giant squid.
- If You're Happy and You Know It, Slap Your Foes: What will happen if an entertainer keeps not getting the satisfying reaction that he wants?
- A Witchy Way: Underwear mistakes his costumed friends for real witches.
- Cheeky Business: Nutty and Hucky disguise themselves as chipmunks to infiltrate Giggles' birthday party.
- Icy Wolf, Hidden Dragon: Bjorn tries to learn martial arts, which isn't so easy when half your body is frozen solid.
- Fly Like the Wind: This episode introduces Windly, the girl with cape.
- Out of the Hat: Two magicians perform for the audience, with their hat tricks being the highlight.
- Sting Operation: Buzzles prepares himself for a fight against Beehive.
- Steamed Punks: An ancestor of Sniffles comes to modern day.
- Too Dirty Today: A certain member of royalty tries to learn how to operate things at the laundromat.
- A Whole Lot of Latte: Poor Joe ends up having to deal with Suey's flip-outs.
- I Spy A Spy: Alex embarks on a mission to rescue friends from a burning bank.
- Artist's Block: Alex is kidnapped by Lustly after he denies her request for a painting of them together.
- Mittens and Kittens: Mittens buys birthday cake, but the Dark Kittens try to steal it.
- The Train to Doom: Baumey is distracted by a phone call and causes a fatal collision in the subway.
- Bobcat Blues: Tufty goes to the bakery to buy a cake. A sequel to Mittens and Kittens.
- Bitter Pill To Swallow: Basically Every Litter Bit Hurts but with extra steps.
- Cousin's Play: Mimi sees her cousin, Pumpernickel, again.
- The Duck and the Fish: Quacko has a rough time trying to catch fish.
- Not the Right to Steal a Flower: Tionna has her flower stolen.
- Ex, Y, and Z: Axel and Masky run into an old friend.
- Magic Matter: Pumpernickel accidentally turns Aqua into a baby!
- Pond of Love: Squirt and Snowflake go on a date for the first time.
- A Walk in the Park: Squirt and Snowflake go on a date again, this time in the park.
- Good Morning, Love!: Lovely takes a morning stroll.
- Bad Luck!: Masky is cursed with bad luck!
- You Are My Biggest Idol: Puffy finds a new toy.
- Just to Slug You Steered: Cuddles finds an aqua wand that can be used to restore lost body parts.
- Keep It Cool: Sandy relaxes on the beach while Snowy tries to escape the heat.
- Two Chaos Fever: A walk in the woods turns horrific for poor Flaky.
- Spring Cold: Bleedy gets a nose bleed.
- Rollin' Along: This episode introduces Eyeball, the otter with a fake eyeball that often pops out.
- Just a Fluke: Gilly and Seafoam must help two merfoxes evade Cryptie.
- Related Time Stinks: This episode introduces Flaky's mother, Faky.
- Not Going Nuts: This episode introduces Chippie the nut lover.
- Global Warning: Ice Pack believes the world will be flooded and tries to stop it from happening.
- Look Out Down Below!: Flowers meets a new rival.
- I Spy With my Little Eye: Axel spies on his ex-boyfriend.
- Flirting Out: Giggles and Petunia flip out for the first time.
- Camp Supanovatrickleout: A sequel to the original "Camp Pokeneyeout".
- Goddess Goodness: This episode introduces Atlanta, the goddess of the sea.
- Pack Sheep: After losing her wool, Sheepy discovers her true origins with help from a long-lost sibling.
- Wings of Change: Lab Rat turns an ordinary rabbit into a half-moth mutant.
- I Heart You the First Time!: Axel and Spooks fall in love with each other after an incident.
- Yakking Up Hairballs: Yacket finds an unorthodox way to give his hair an upgrade.
- Powerpossible: This episode introduces Starver, a 6-year old beaver who is a superhero fan.
- Nice Gnawing You: A catastrophe unleashes when the window breaks off of an old taxi.
- Close But No Cigar: Avalon tries to put an end to Forsumma's smoking problem.
- Don't Be a Prick: Cacty buys tons of cacti and plants them all over the place.
- Chowdown: Treeter's eyesight is put to the test when his hunger craze brings him to a tree.
- Dolly's Day: Despair finds a new doll to play with.
- Don't Bee Long: Disaster unknowingly causes and then gets into yet another trouble, this time with bees added to the mix.
- To Whom Fist May Concern: Riston and Matoba got to a fight with each other. Meanwhile, Fliqpy made a decision to kill whoever survives the fight.
- Better Soft Than Never: Aqua steals Plushy’s pillows.
- Doughnut Crazy: Doughnut and Doughy go on a date.
- Explosive Toxicity: Bushy makes a bunch of toxic glass flasks, a good amount of those flasks create huge explosions, causing trouble to the Happy Tree Friend Town.
- Big Brains: Devious and Sniffles have a brain duel.
- Winner Winner Chicken-Dinner: It is Flaky's birthday party, and she has invited some friends and random guests! Little would she know, she would invite two young men who have been rivals since their very early childhood.
- A Sluggy Situation: Sluggy causes a blackout and it is up to Zee, Dexter, and Amp to find out.
- Flying Sorcerer: Tiverer, a mad magician, uses hypnosis to butcher viewers gullible enough to attend his show.
- Fizzle Wizzles: Fizzles buys a lot of soda bottles from Swindler not knowing that it is a scam. The soda bottles are hazardous and cause severe injuries and deaths to the other characters.
- Cliff Hanger: The debut of Samuel and his friends.
- Are You Kitten Me Right Meow?: Disco Bear (unintentionally) and Cub cause another demise for Puffles.
- Lyle's Story: Lyle drives around in his new car.
- Search and Delete: A HTF version of a Grand Theft Auto IV mission.
- Sucks to Be You: Another day in the life of Samuel and his friends.
- Love Me Do: Lyle dates Stacy.
- Four Seasons: When Princess Giggles is kept hostage along with those who tried to free her, it is down to Twirly to save his best friend and the dear princess.
- Royal Fan: A princess descendant becomes the servant of a faux princess.
- Leaf Me Alone!: It so appears that Puffles was roller-skating in the wrong area, and thanks to her stupidity, a school play rehearsal turns into a bloodbath!
- Taking It Slowly: Tord becomes tired of being slow and decides to boost his speed by putting on a jetpack. However, it all ends terribly.
- Hooked on You: In Skullya’s debut episode, she takes a relaxing fishing trip. What could go wrong?
- From a Moon Too Soon: Moony has a dream about jumping over the moon so much that she then wants to do it, although she has to find ways to do so.
- Nut Your First Time?: After a date with Giggles goes tragically wrong, Nutty manages to find his perfect soulmate. Will things stay on cloud nine, however?
- The Last Draw: Thanks to a certain bear, a friendly game of cards and a snack of candy is turned into a brutal bloodbath.
- The Best Friends Ever: Yuna is very sad because she needs a best friend.
- Giant Exposure: Floppy has turned Jane into a giant.
- Haunted Frights: In this Halloween-themed episode, Espy and some friends visit a haunted house. What could go wrong?
- A Night to Remember: Part 1: Oddity falls ill on Sunset's birthday. Who will be celebrating Sunset's birthday without Oddity?
- A Night to Remember: Part 2: As Sunset hears that Oddity is in stable condition, she hears that Sparkles can make her birthday a little better without Oddity. How will this happen?
- I Don't Carrot: This episode introduces Mrs. Carrots the vegetarian who goes around looking for carrots.
- I Wouldn't Farm You: Another halloween episode that introduces a never-before-seen fanon tree friend in a campfire story that turns out to be true.
- To Sing or Not to Sing: When Pitch collapses live on stage due to heart failure, Mocha is the only one to finish the concert.
- Helping a Pal out: Nightfall needs help on cleaning her house.
- No, Not the Diamond Again: Nightfall has to get her diamond back.
- An Odd Situation: Cascade's wand goes missing in the forest.
- The Greatest Superhero of All: TBA
- Beg For Eggs: Foxster tries stealing eggs from a nest, only to get a brutal surprise.
- What Have I Done?: When Nimbus dies from his injuries sustained from an accident, he is the only one to blame.
- A Very Sad Day for Candy: Sweeps steals all the chocolate Candy just bought.
- To Stop Being A Prick: Finding out why Pricky's curly quills came to be so. (Still being worked on)
- The Great Loss: Beautifast ends up dying of natural causes.
- Long Live the Greatest Superhero: This episode is a continuation of "The Great Loss".
- Beware the Mutants: The spooky atmosphere grows even more spooky when a mutant Tyrannosaurus rex is supposedly spotted in town.
- The Lost Mountain: TBA
- Crying Lakes: In this horror special, Forcey makes Mole cry a whole waterfall!
- As Right As Rain: In this Halloween episode, Tyranny seals her fate in the worst way.
- Rest in Peace: Applechip suffers from a heart attack.
- The Power of Reflection: TBA
- Gady's Christmas: Oddity explains Christmas to Squag.
- Have a Happy Halloween: Kyle's house goes spooky during Halloween and it is up to Kyle and pals to find out the cause.
- The Race to the Water: The tree friends are desperate for some fresh water, but Flash will not help them out without a challenge.
- Don't Be So Elfish: B. J. decides to become the mall Santa to earn enough money for a new video game.
- Who's Rudolph?: The tree friends learn about Rudolph.
- Friends to the Downturn: TBA
- Thirty Hours from Tokyo: Ramen arrives in Happy Tree Town and forms a relationship with Treeter.
- Dam and Blast: TBA
- Christmas Magic: This episode features Evergreen and Kringle putting on a Christmas sing-along in Happy Tree Town.
- Christmas Magic: Part 2: This is the continuation of Christmas Magic.
- Ballin' Out: When Weastel the sporty weasel takes dodgeball too seriously, even his own friends have to go serious on him as well.
- You're Sleighing Me: Evergreen tries to get Santa's sleigh moving. But did she get the right Santa?
- Into the Sewer: Duuki must stop another heist by Lifty & Shifty, but there is a twist.
- Garden Destruction: Flippy made Petunia angry by running over her flowers with a lawnmower.
- November Has Come: Mr. Compson gets chased after by Bagel in airplanes.
- A Hosing Mistake: Doe's fun with water balloons goes horribly wrong.
- Cranking Up the Lights: Lain is happily jumping across her room repeatedly until the lights suddenly go out. She decides to call someone to fix the lights.
- Bubble Trouble: Stacy does cola tricks to Pepsi and Coke.
- Complete Loss: Lain dies before the holiday she was looking forward to properly starts.
- Christmas Magic: Part 3: This episode is a continuation to the previous two "Christmas Magic" episodes.
- Bee Happy: Petunia causes a gross result after a bee lands on her nose.
- Chirping Out Loud: Chirpie goes through a change in music.
- Donut Hell: Jeremy decides to steal Doe's donuts.
- Dill With It: Lumpy becomes a pickle.
- Mysterious Fog: A mysterious fog infects everybody that touches it.
- Snow-brawl: Axel and Spooks have a snowball fight, which soon spirals out of control. This episode would introduce Floof.
- Oh Sheep!: This episode introduces Baapy the nerdy sheep.
- Dribble Me This: A ball-obsessed bulldog gets caught in a basketball match.
- Christmas Who?: TBA
- XP Rabbit: Hijinks ensue with Jillian.
- One on One: TBA
- An Auk-ward Mistake: Kingly makes headlines by disguising himself as an extinct bird.
- Street Urchin Suite: The Dark Kittens pretend to be sad little orphans to get free presents for Christmas while fighting against a scheming heron.
- The Hypnotiser: The episode is about Mime who claimed to be able to hypnotise people.
- Out in Space: This episode introduces Telescope the space-loving bat.
- A Hell to Pay: Jesse pranks Janet and eventually gets the death he deserves.
- Sponge in Sponge: Donna’s house cleaning turns into a disaster.
- Blazing Lights: Glow's light show goes horribly wrong all of a sudden.
- Flames of Love: An attack by pyromaniacs is not enough to keep two dalmations from falling out of love.
- You Fell into My Flytrap: Petunia found out that her garden is full of Venus flytraps. This episode also introduces Munchies, a green caterpillar that loves vegetables.
- No Shirt, No Shoes: Cuddles and Toothy get subjected to the "no shirt, no shoes, no service" rule.
- Ain't Snowbody Got Time for That: Cuddles accidentally triggers an avalanche.
- Beef Thief: Splendont attempts to steal Lumpy's meal.
- As Cheesy As Pie: St. Patrick's Day goes wrong when it all started with a simple cheesy order.
- Around the Clock: This episode is the debut appearance of Lemmie, a sleep-deprived lemming.
- Really Bad Unicornius: In this episode, Unicornius is weirding everybody else out. This episode also introduces Taker, the weasel who is obsessed with stealing.
- Fliqpy vs. Keith the Cat: Flippy's evil side gets outsmarted by a mascot.
- Stranger Danger: Stevie learns the titular lesson the hard way.
- A Wormy Situation: A calming time at the ocean becomes a storm, all because of Sara's need for fishing bait.
- The Perfect Dress: Sanna tries to buy a dress on April Fool's Day.
- Bold and Trash: This episode introduces Maker, the monkey who loves to create things.
- Dribbling Away: Dribbles refuses to let Squabbles play with his basketball and then he goes out of his way to get his basketball back because he almost lost it thanks to Sneaks.
- Fast and Furious: Speedy tries to help Giggles, with blazing fast results.
- Sunken Clam: A submarine ride goes wrong with Teretiee involved.
- The Sadisticground: Lumpy robotically builds a playground in order to sadistically kill Hedgey, Cuddles, Toothy, and Petunia.
- Window of Opportunity: The season begins with a locked door.
- Bugs Bite: Auntie adds Ambar to her collection and ends up freeing the ancient bloodsucker.
- Glitter Bugs: Sparkles tries to brighten up the dump, with varying degrees of success.
- Wildfire : Swifty starts a fire that leaves a burn on the town
- Grill or Be Grilled: Gourmet cooks up trouble among his fellow Barbequers.
- Summer Rayz: Swifty and her bothers finally found a place to relax! Let's hope they can get there...
- Two Quiet Friends: "Two Quiet Friends" is a fan episode of Happy Tree Friends, it introduces Saber-Toothed Tiger and Dumby.
- Who Let the Hot Dogs Out?: "Who Let the Hot Dogs Out?" is a fan episode of Happy Tree Friends.
- DJ for a Slay: "DJ For a Slay" is a fan episode of Happy Tree Friends.
- Chunk of Cake: "Chunk of Cake" is a fan episode of Happy Tree Friends.
- The Missing Axes: Barker finds out that Lifty and Shifty stole all of his axes.
- Happy To Swing By!: Cub's fun time is ruined when some girls fight over him.
- Bother Bear: Bjorn gets more than he can bear when he is turned into a bear.
- From One to Tentacles: Mura gets up in arms.
- Happy Leaster: Cuddles does his job as the Easter Bunny.
- Mime Hunting: This episode introduces Tina, the weird fish.
- All Boxed Up: Boxer makes a mess and Boxie tries to stop him.
- Long Time, No Sea: The debut of Sipper and Macaroon.
The pop-up style is retained from the previous season range.
"A is for Abra"
- Showers is preparing his bathtub.
"S is for Showers - Having some showers is seldom shameful."
- Snooty is comfortably sitting on a cushion as she watches Cranky lazily operating a cement mixer.
"S is for Snooty, C is for Cranky - Someone's duty should be super safe! Cool critters can't crack under pressure while crankin'!"
- Alex is drawing a piranha.
"A is for Alex - Any aspiring artist makes anything look amazing!"
"C is for Coral"
"K is for Kitty Kat"
"C is for Cacty"
- Pyro is hugging a gigantic Eevee plush that he set fire to.
"P is for Pyro - Provoking perfection for peevish reasoning is less-than-paceful Pyro's purpose."
- Puffles is surprised by a puffed up pufferfish in its tank.
"P is for Puffles - Prickly pufferfish will petrify this puffy, passe persian kitty!"
- Lyle is driving a luxurious car.
"L is for Lyle - Lyle driving his car up and down a hill."
- Crook is running with a bag of money.
"C is for Crook - This callous chump captivates catastrophes with his cynical captiousness."
- Twirly and Whirly are pulling off a cute pose.
"T is for Twirly, W is for Whirly - Taunting and tampering with tentative twerps since time tweaked. Wacky, wearisome winds will whack this waltzy wally into weighty, whimsical warranties!"
- Baumey holds a pizza slice while looking at the viewer.
"B is for Baumey - Be the best with your buddy!"
- Duuki holds a pile of dirt while looking at the viewer.
"D is for Duuki- Get down and dirty with your deeds!"
- Ramen prepares to eat ramen.
"R is for Ramen - Ramen is the most relaxing noodle."
- Rosalie lies with her back facing a river.
"R is for Rosalie - Ruling the river provides a radical reward!"
- Treeter looks down excitedly on some tree branches.
"T is for Treeter - Treat yourself with tremendous treats!"
- Espy is sitting down at a breakfast table with a napkin on his neck and both a fork and a knife in his hands.
"E is for Espy - Eating eggs early in the morning is extremely important!"
- Wisp frolics through a flower field while carrying a basket full of wilted flowers. His path is covered with wilted/burned flowers as well.
"W is for Wisp - Warm wildfires won't scare this white wholesome cat!"
- Hedgey is seen putting some items in an organized manner.
"H is for Hedgey - A handy hedgehog who is all about organizing!"
- Munchies is eating vegetables among the flowers and butterflies.
"M is for Munchies - Munching marvelous meals makes him have a marvelous mood!"
- Spar is seen thinking.
"S is for Spar - Sparking questions will be present around this sparrow!"
- Auntie is seen cradling the Cursed Idol in her arms.
"A is for Auntie - Ancient Antiques for a Amiable Aged Lady"
- Ambar stands on two bags of blood.
"A is for Ambar - Appetite for A+ Aliments and B- Blood"
- Gourmet stands with his fork and knife stabbed into a chunk of raw meat.
"G is for Gourmet - Greasy Cooking and Gruesome Killing with this Ghoulish Cat"
- Track is seen trying to track down small animals in the woods.
"T is for Track - Tracking foxes are terrific!"
- Bone is seen happily eating a bone.
"B is for Bone - Dogs devouring bones are bony!"
- Drowsy is seen sleeping.
"D is for Drowsy - Sleepy sloths are detraining!"
- Enjoyer is seen having fun.
"E is for Enjoyer - Koalas are entertaining and fun!"
- Nerve is seen nervously looking at the screen.
"N is for Nerve - Nervous hamsters are nerve-wrecking!"
- Laze is seen happily sitting on a chair, doing nothing.
"L is for Laze - Lazy gerbils aren't called lazy for nothing!"
- Barker is seen chopping down a tree.
"B is for Barker - Lumberjack wolves are all about chopping down bark trees!"
- Speed is seen running super fast across the screen.
"S is for Speed - Speedy cheetahs are charming!"
- Pandy is seen working on a computer.
"P is for Pandy - "Red pandas can be professionally smart!"
- Dr. Goat is seen holding a test tube with chemicals in it.
"D is for Dr. Goat - Doctors are scientific!"
- Purr is seen trying to cut his very long whiskers off.
"P is for Purr - Purring whiskers can be really long!"
- Furious is seen angrily looking at the screen.
"F is for Furious - Furious oxen are no joke!"
- Yote is seen trying to give some items to the viewer.
"Y is for Yote - Yearning coyotes are all in about doing favors for others!"
- Sweetale is seen happily looking at the screen.
"S is for Sweetale - Sweet guinea pigs are nice to others!"
- Guitar is seen playing his guitar.
"G is for Guitar - Great tigers are musicians!"
- Cables is seen holding some cable wires.
"C is for Cables - Pigeon and cable combo is something you don't see everyday!"
- Sneaks is seen trying to scare the viewer.
"S is for Sneaks - Sneaky bats are spooky!"
- Cinnamons is seen with a bag of cinnamon.
"C is for Cinnamons - Cinnamon sugar gliders are sweet!"
- Cools is seen holding a rose.
"C is for Cools - Cool shrews are very flirty!"
- Chillie is seen wrapped up in a blanket.
"C is for Chille - Chille chinchillas always want to stay warm!"
- Gears is seen holding some gears.
"G is for Gears - Gearing techniques can be present in badgers!"
- Shock is seen inside his ball.
"S is for Shock - Shocking seals are dangerous!"
- Cream is seen eating some sweets.
"C is for Cream - Creaming desserts can attract sweet-hearted woodchucks!"
- Flesh is seen eating some meat.
"F is for Flesh - Meat loving Tasmanian devils are meaty!"
- Joyful is seen happily looking at the screen.
"J is for Joyful - Joyful quokkas are happy!"
- Veggie is seen eating some vegetables.
"V is for Veggie - Vegetarian pigs are veggie!"
- Liquid is seen protecting a lake.
"L is for Liquid - Liquid watering penguins are protective!"
- Watcher is seen looking at the viewer, in a blank but serious expression.
"W is for Watcher - Watching fennec foxes are all about security!"
- Tonguesy is seen with her tongue sticking out of her trunk.
"T is for Tonguesy - Tonguesy anteaters have very long tongues!"