Jak is human, and looks it, mostly. On close examination, he is just slightly... off. His body is too skinny for the feats of strength he performs, and his movements have an inhuman grace. His ears are too long, his face to narrow, his skin slightly green, his eyes... his eyes go on for ages.  He is not fey, but he is as close to being fey as is possible for one of pure human birth.

Jak wears simple robes. He bears no obvious weapons nor armor. Nonetheless, his very movements imply the prowl of a master predator, and when threatened he shows why, transforming into a huge, Tunche, the great fey jungle hunter.