Seagull

Seagull is a bird with a pop bottle wrapper around its neck. It has a nest on the speaker and it appears in the opening theme song where it is pulled under water by a mysterious tentacle. "In Who Can You Trust?," it is hit by an apple shot by Sadie. Later in "That's Off the Chain!," it is knocked out by Owen's gas. he usually appears in a lot of episodes after he dies.

In the TDI special, it was eaten by a shark.

Trivia

 * The seagull, like Trent, is the TDI equivalent of South Park 's Kenny McCormick though the similarities are easier to spot:
 * They both have distinguishing features (Kenny has a parka that covers his face, the seagull has it's bottle wrapper)
 * They are both unable to talk (Kenny's parka makes him speak in mumbles, the seagull is a bird)
 * They both die in some absurd manner in each episode and theme song (Kenny has died at least 102 times on South Park, the seagull has died and come back several times: once in the theme song, after being dragged into the water by a giant squid, second when Sadie knocks it out of the sky, three times when Owen gasses it, fourth when the shark devours it, and finally in the first episode when it is washed away into the lake.
 * In the original Total Drama Action trailer, with clips from season one, it is eaten by an alligator. Since this death never actually appeared on the show, it is most likely non-canon.