Tobias's father on Animorphs is Elfangor, an Andalite warrior who gave the Animorphs their powers before his death. Tobias's mother is human, making him a half-Andalite, half-human hybrid.

- Tobias was never seen again - Marco and Cassie wrote a book - The animorphs won

No, Tobias remains stuck in his red-tailed hawk morph for the rest of the Animorphs series.

Tobias dissapeared and Rachel died.

In the Animorphs series, Rachel and Tobias share a kiss in the book #33: "The Illusion". This moment occurs during a pivotal scene where the characters' emotions are heightened.