Tobias is a human who has the ability to morph. Like the rest of the Animorphs including Jake, Cassie, Rachel and Marco. Tobias is stuck with his hawk morph and therefore his real body is a Red-tailed hawk. But later the Ellimist freed him from his body allowing him to morph again. He is the son of Elfangor the Andalite. His uncle is Aximili (AKA: Ax) His mother is unknown.