So you didn't expect this version of the Happy Tree Friends? Believe it or not, the Fandom has transformed the little, cute, colorful critters into really popular anime characters, giving them depth and creating a lot of fan stories involving them.Many can be seen here: Happy Tree Friends (you still have to make an account to see all the portrayals). Those who have a pixiv-account can find even more under the "HTF", "HTF擬人化" (Basically "HTF Humanization") and "ハピツリ" ("Hapitsuri") tags. The characters are human and more developed than the actual, canon characters, though there is no possible way to join all the interpretations of a character into one.
Note: This is only a large fanon creation, there is not an actual, official anime.
The most common themes or conceptions portrayed in the anime styled fanstories or fanart are:
Blonde, Brunette, Redhead: Giggles, Petunia and Flaky, although Giggles' strawberry hair is associated with strawberry blonde, while Petunia's blue hair is associated with black hair.
Four Philosophy Ensemble: Flippy, Splendid, Lumpy and The Mole are usually grouped together (sometimes called "Four Gods"), since they are the characters who have the reputation of having the most kills:
Flippy: The Cynic.
Splendid: The Optimist.
Lumpy: The Realist (he still has his moments, but he's closer to this than the others).
Gender Bender: Though most characters have been bent a few times, Flaky is the most popular choice, mostly due to the fact that fans have been confused regarding her gender for a long time.
Hot Dad: Played with - Pop doesn't usually have the personality of the examples on that page, but many artists draw him as younger and better-looking than his clothing would suggest.
Heterosexual Life Partners: Cuddles and Toothy, Lifty and Shifty (at times - see above and below), Giggles and Petunia.
And others see it as her and Flippy's evil daughter, who took the looks after her mother and her father's insanity. This is most probably due to a really popular artist who created some pictures with the potentialspawnofFlippy and Flaky.
Perpetual Frowner: Handy. Mostly due to the fact that he's frustrated because he is an amputee.
Plucky Comic Relief: Splendid appears sometimes in Flippy / Flaky serious comics and wrecks the mood. Nutty too, but he appears less often than Splendid.
Red Oni, Blue Oni: Nutty and Sniffles. Splendont and Splendid are an inverted example color-wise, because, personality-wise, Splendid is the hot blooded, enthusiastic of the two, while Splendont appears stoic or deadpan most of the time.
Romanticized Abuse: Apparently... many people think Flippy's most attractive side is the fact that he murders and abuses (physically and mentally) everyone around him.
Tomboy: Flaky, even though she's this only when compared to Giggles and Petunia, mostly because she hangs out with guys more than with girls and due to her lack of Tertiary Sexual Characteristics in the actual show. When it comes to their personalities, she's shy and quiet compared to them.
Tsundere: The evil version of Flippy. Petunia is this, too.
Two Guys and a Girl: Again, Flippy, Flaky and Splendid. Cuddles, Giggles and Toothy.
Wife Husbandry: There are many side-stories in which Flaky is under Flippy's care as a little kid or she befriends him when she's still a child, only to fall in love with him later. One example is here.