Episodes/Character Pop-ups

Throughout Happy Tree Friends, the way the characters were introduced, and also the how title sequences and closing credits were displayed, evolved over the years.

Season 1
Internet Season 1's introductions involved every Happy Tree friends coming out of a bush, going through an animation, such as a gesture (a wave), and then going back into the bush and disappearing. Normally, before they appear, text saying "This Week Featuring...", and when all of the characters have finished, another piece of text appears saying "Almost there...", all this happening while the Happy Tree Friends theme song plays in the background.

The gestures the characters make while they are visibly are as follow:

Season 2-early Season 3
In Internet Season 2, all the characters are featured in a book. The book shows more characters as it flips pages. All the character are featured one by one on a page. The background is usually the same color as the character.

The gestures the characters make while they are visibly are as follow:

Rink Hijinks Pop-ups
In the episode Rink Hijinks, the character pop-ups were different from the others. The most likely cause of this was that this episode was under development before the Second season, and these were the original designs for the pop-ups.

These pop-ups all had the same background, same color, and the characters were outside instead of inside the background, and their poses were different (Ex. Flaky is happy instead of worried).

Late Season 3- Season 4
The starring intros began with the episode Wrath of Con. Starting in Something Fishy, there is also a featuring character card, which read "Featuring a few friends:" and has the characters on a playground. Starting in Brake the Cycle, the card instead says "Also featuring:".

Each character's starring pop-up features a rhyme or an alliteration that fits in with their personality traits.

Featuring Pop-ups
In the Season 3/4 Featuring pop-ups, the text will either say.
 * Cuddles is on the slide, with both his arms outstretched while looking down.
 * Giggles is on the slide, with both her arms outstretched while looking in the viewer's direction.
 * Toothy stretches out both his arms. He is not featured on the slide.
 * Lumpy just stands stupidly when he is not on the slide. His arms are down when he faces his right. His left hand is near his mouth if he is facing his left. When he is on the slide, he lays upside down, with his body taking up almost the entire length of the slide.
 * Petunia stretches her arms out when on the slide.
 * Handy stands happily while looking happily at the viewer.
 * Nutty is too jittery to go on the slide. However in Camp Pokeneyeout he is at the top of the slide, looking and waving at the viewers.
 * Sniffles looks in the direction of the viewer, with both his arms outstretched, whether or not he is on the slide, however, in Camp Pokeneyeout he stands with his arms down while facing his right.
 * Pop stands by the bottom of the slide.
 * Cub plays happily on the slide with both arms outstretched.
 * Flaky looks at the direction of the viewer nervously, with her right index finger near her mouth.
 * The Mole is feeling around with his walking stick while facing his right.
 * Mime looks at the viewer while miming, However, in Random Acts of Silence, he just faces happily to his right.
 * Russell smiles at the viewer with his hook in the air.
 * Cro-Marmot stands still.
 * Lammy slides down, while Mr. Pickels is standing on the top of the slide, however, in Spare Tire she holds an inanimate pickle in her arms.

Featuring Pop-ups

 * Cuddles: Waves.
 * Giggles: Waves while leaning to her right.
 * Toothy: Waves.
 * Lumpy: Stands upside-down.
 * Petunia: Waves while putting her left hand behind her back.
 * Handy: Waves.
 * Nutty: Waves while his left hand is holding a lollipop and he's leaning to his right.
 * Sniffles: Waves while facing to his right.
 * Pop: Waves.
 * Cub: Stands happily.
 * Flaky: Looks at the viewer nervously.
 * The Mole: Is facing to his right.
 * Mime: Holds up both of his hands.
 * Disco Bear: Smiles.
 * Russell: Holds up both arms while leaning to his left.
 * Lifty: Grins.
 * Shifty: Grins.
 * Cro-Marmot: Stands still.
 * Flippy: Waves.

Ending Credits

 * Cuddles turning the crank to roll the credits.

Winter Break
In this special half-hour TV episode, everyone is seen on an ornament on a Christmas tree for their starring or featuring role.