Flippy

Flippy is a green male bear. He wears dog tags around his neck and a green beret with a checkered crest on his head. He is a retired veteran soldier in the Army. He fought in the Weaponized Animal Regiment (The W.A.R), and has an obsession with making booby traps inspired by the Viet Cong, as well as a flashback of his experience of being held captive by them (as seen in Easy For You to Sleigh episode). In addition, his attire seems to resemble the U.S. Army Special Forces, which played a role during the Vietnam War. As he fought for years, he was promoted to the rank of Sergeant. According to writer Warren Graff, Flippy is mostly inspired by and based on John Rambo. During the internet and TV series, it is unknown if Flippy has retired from the Army or if they are simply in a time of peace. Flippy rarely appears in the series, most likely due to his repetitive behavior in most of the episodes in which he appears. Lumpy most likely has even more kills than Flippy, since he has below 150 kills and has only appeared in 23 episodes so far.

Flippy is the only character in the series to cause the deaths of other characters on purpose in every episode which he appears, at least when he "flips out" (except for Without a Hitch and Happy Trails Pt. 2: Jumping the Shark, where he never flips out for real, and Autopsy Turvy (Double Whammy Part II), where all of his kills happen by accident). He has a severe case of post-traumatic stress disorder (PTSD). Whenever he sees or hears something that reminds him of war (e.g., gunshot-like sounds or crackling campfires), he becomes delusional and extremely aggressive, often killing everyone in sight. (It's possible he also has dissociative identity disorder as a result of his experience in war, judging from him basically becoming someone else in most of his appearances and the few instances he resisted his evil side during Double Whammy and Hear Today, Gone Tomorrow, much like a Dr. Jekyll and Mr. Hyde complex). He also might "flip out" due to anger or stress as seen in Random Acts of Silence and Happy Trails Pt. 2: Jumping the Shark. While flipped-out, several physical features about him change: His eyes turn a different color, usually green or yellow, his voice changes from high and cute to deep and evil, and his teeth become sharp. In the early internet shorts, his teeth simply became crooked. There has even been one instance where his eyes became small, circular, and with a light blue iris (Remains to be Seen). If he is in his evil state, he (along with Lumpy, The Mole, Cro-Marmot, and Nutty) doesn't have Pac-Man shaped pupils. When he is flipped out, he is known as Fliqpy.

STV1E13 Flippy's normal side is so wholesome. Maybe too wholesome...

Although Flippy can be the cruelest and most dangerous character in Happy Tree Friends when "flipped out", in his normal state, he is considered to be one of the most sociable and kindest characters. This is proven in several episodes where he is seen doing social activities with some of the other characters, such as going to the movies and playing hide and seek. In most of the episodes where he appears, he is shown as a friendly individual before he goes insane, or as many people say, "flipping out", hence his name. Additionally, when he "flips out", he doesn't remember the bloody rampage that follows. However, in Double Whammy Part I, (and possibly Hear Today, Gone Tomorrow, when he resists his evil side for the first time) he finally realizes his problem and goes to Lumpy the psychiatrist for answers. After three attempts to cure him, Lumpy fails. At the end of the episode Autopsy Turvy (Double Whammy Part II), Flippy finally cures his post-traumatic stress disorder, but is run over soon after by a chicken truck.

He appears to be good friends with Flaky, as they are shown doing activities together like playing hide and seek, and going camping. Although Flippy has killed Flaky several times (even once on purpose in non flipped out state in Happy Trails Pt. 2: Jumping the Shark) he doesn't kill her in Party Animal or Random Acts of Silence, while she is vulnerable. Flaky's scream snapped him out of his flipped-out mode in Double Whammy Part I. Despite that they appear to be good friends, Flaky develops a phobia of him in the later episodes. She gets so scared of him that she gathers the courage to kill him, going to the point where she stabs him in fear when he tries to help her in Without a Hitch. As of Random Acts of Silence, Sniffles and Nutty also seem to be aware of Flippy's flip-outs, when they tried sneaking out of the library as Flippy got agitated by Mime.

Chocolate and Candy Corn Something's fishy on this Halloween night...

He also has an allergic reaction to peanuts (or venison) just like Flaky (if his allergy to peanuts is true). The Blurb version of Remains to be Seen also states that he is allergic to chocolate and candy corn. However, like most Blurbs, most of the info mentioned isn't considered canon until approved, so this may not be true. Flippy also appears to be an extremely heavy sleeper, as seen in Easy For You to Sleigh and Hear Today, Gone Tomorrow.

Flippy is considered to be one of the most popular characters in the series. This can be seen in the Best Happy Tree Friends Character Tournament, where he is the character who won the event.

He has his own action episode called W.A.R. Journal, part of the Happy Tree Friends Action Series: Ka-Pow! show. According to the first episode, Private Flippy didn't start out as a well-honed killing machine. He accidentally threw a slice of pizza at the enemy commander rather than his knife, demonstrated an inability to throw his knife straight while under pressure, killed both of his teammates, and hid in the carcass of one of his dead teammates in fear. He flips out for the very first time when he hides inside his comrade's dead body to avoid being killed by the Tiger Army. He ended up losing his hands in a fight with the Tiger General, but he was apparently able to reattach them some time between the events of W.A.R. Journal and the regular Happy Tree Friends series (unless these episodes, like the regular Happy Tree Friends series, revert everything back to original at the start of each new episode).