Jak: Hero to the world the Precursors left behind, Jak has the special ability to channel the magical force called "Eco" that is imbued in everything on the planet.

Daxter: Transformed into an ottsel (half otter, half weasel) by "Dark Eco", Daxter is Jak's sidekick and closest friend. Always a troublemaker, smooth talker, and credit-taker, and a real hit with the ladies.