|Behind the scenes|
Chapman works as the Vice-Principal of the Animorphs' junior high school. At an unknown point, Chapman and his wife were infested by Yeerks and made Controllers. Both agreed to this infestation voluntarily on the condition that their daughter not be harmed.
Chapman a medium/high-ranking Yeerk (possibly a Sub-Visser) who is often in charge of important Yeerk projects on Earth. The Animorphs often used him to discover new Yeerk Pool locations and gather intelligence.
- Iniss 226's rank is never revealed. However, it is likely that, given the responsibilities he was often tasked with, he was at least a Sub-Visser or possibly a low ranking Visser.