Jak is the main protagonist and titular player character of the Jak and Daxter series, accompanied by his sidekick, Daxter. He is a human male with green-blond hair, cerulean blue eyes, and fair skin. A brave yet troubled hero chosen by the Precursors, Jak's unique skills, particularly his mastery of eco, have allowed him to save the world from several existential threats.
Jak was raised in Sandover Village by Samos Hagai, and when his best friend, Daxter, was transformed into an ottsel, the duo went on their first adventure, supported by Samos and Keira. Their next saw the four travel to Haven City, where dark eco experiments changed Jak. Though Jak's fearlessness, drive for adventure, and candid nature remained his core traits, where his candidness once presented as him being mute, it instead manifested in a stoic attitude and short temper. Jak's traits contrast with Daxter's cowardice and jovial nature, though their supportive friendship has been vital. Often beginning adventures with selfish motivations, through his war with the Metal Heads and Dark Makers, Jak ultimately fulfiled the Precursors' destiny, being the hero the world needs.
Jak's ability to channel eco is his most noteworthy and unique ability. He begins with the ability to channel the four basic eco types (green, blue, red, and yellow), but after the experiments can transform into Dark Jak for more monstrous powers, and later into Light Jak. Jak's signature weapon is his Morph Gun, which uses eco-based ammunition for different gun types. Beyond this, Jak has extensive vehicular skills, particularly with zoomers and buggies, and is a notably skilled racer.
