Bear

The Bear first appears in The Big Sleep, when Tyler hallucinates that Katie and Sadie are being mauled by the bear, and has appeared in almost all episodes after that. In The Sucky Outdoors, it was attracted by Izzy's bear costume, which caused it to frighten the entire Gopher team onto a tree. Later in the episode, it scares Katie and Sadie out of its cave. In Paintball Deer Hunter, he is seen eating chips (that he had stolen from Cody after mauling him ferociously), and wiping its glasses with his fur. In Search and Do Not Destroy, Owen has to get his key from a necklace around the bear's neck. The bear, who is sleeping, traps Owen for a while, before we see him later to have nearly swallowed him. Both the bear and Owen get tranquilized. In Wawanakwa Gone Wild, the bear is briefly seen falling on a kid on a teeter-totter and later is shown running after Izzy shoots Heather. It was also seen eating some food that belonged to Chris at Chris and Chef's secret location. He was last seen getting a purple nurple from Owen. He's most likely to be the brown color phase of the American black bear, the only bear species native to Eastern Canada.

He returned in Total Drama Action. He appears on the opening theme seemingly waving to the audience. But then Izzy jumps in front and starts to wave to the audience, which upsets the bear and he starts to roar at her. But then Izzy scares him and a chase begins. The Bear appears in the first episode of the season, Monster Cash. He apparently was in a building before it burned down, he then chases Duncan, Gwen and Trent before they lose him. When Chris asks why the bear was here, Chef informs him that it had one more day on its contract. Despite that, the bear appeared in Top Dog as Owen's animal buddy. The Bear reappears in Mutiny on the Soundstage, in the first part of the challenge, and also when Duncan was reenacting the challanges from Million Dollar Babies.

Trivia

 * The sharks, along with the bear, are the only non-human employees of the Total Drama series.
 * They share a cave with the Sasquatchanakwa, but are never seen together except once when Molotov was with one.
 * Oddly, it loses the fur on top of it's head in The Sucky Outdoors, but it has regrown by the next appearance.
 * However, there is likely more than one bear on Total Drama Island
 * In Total Drama Action it is shown that Chris hired him and its the same bear (But its unknown about Molotov).
 * It is unknown if Molotov and the bear are the same or two different bears.
 * Assuming they are different the contract could be just for Molotov and the original bear can still make appearances.
 * In No Pain, No Game the bear is seen wearing Katie (or Sadie's) outfit and giving an "Eee" like they would.
 * The Bear wears glasses, as reavealed in Up the Creek (see picture below). However, they might be glasses that he stole from someone. It might be a different bear, as this bear is on Boney Island, and the usual bear is across the lake at Camp Wawanakwa.
 * Being in Top Dog means his contract must have been renewed.