Fan Casting Tom Berenson in Animorphs

Jake's older brother, a Controller. His original Yeerk is actually promoted and meant to receive another host early in the series, but ends up in Jake instead; it subsequently dies, while Tom receives another Yeerk. Tom had initially joined the Yeerk front organization, The Sharing, and became a Controller sometime before the Animorphs met Elfangor because he wanted to spend time with a girl he liked, who was already a Controller at the time. Tom originally resisted being infested, but eventually complied in order to stop his brother, Jake, from being infested for the time being.