Michael "Mike" is a major character in the Total Drama franchise, debuting in Total Drama: Revenge of the Island as part of the Mutant Maggots and returning in Total Drama All-Stars as a finalist. He is defined by his kind-hearted, anxious nature and his struggle with Dissociative Identity Disorder (DID). Mike is a teenage boy with tanned olive skin, brownish-black hair styled in a fauxhawk, and rust-colored eyes. He typically wears a teal short-sleeved shirt over a cream undershirt and blue pants. Mike (Core): A kind, well-meaning, and slightly insecure teenager who just wants to fit in and hide his condition, especially from his crush. His alters can take over his body with specific triggers.

Chester: An old, grumpy, and cynical man alter who complains about his back and modern things. He usually surfaces when Mike feels frustrated or stressed (the trigger).

Vito: A cocky, aggressive, and smooth-talking greaser/gym-type alter heavily inspired by Jersey Shore. Vito emerges whenever Mike's shirt is taken or ripped off (the trigger).

Manitoba Smith: An adventurous, Outback-style explorer alter equipped with a fedora. He takes over whenever Mike puts a hat on his head (The trigger).

Svetlana: A hyper-athletic, confident, and graceful Olympic gymnast alter who speaks with a Russian accent in the third person. She appears during high-acrobatics or physical challenges (the trigger).

Mal: Introduced in Total Drama All-Stars, Mal is a malicious, destructive, and cunning delinquent who serves as the main antagonist of the season. He tries to permanently suppress Mike and the other personalities. The evil alter. He appears when Mike hits his head on anything, or by someone (The Trigger).