Robots (Arthur Accused!)

Buster imagined robots to explain the missing quarters in "Arthur Accused!". He imagined that they feed on metal in order to fuel their ability to change into any shape.

They are not truly evil, but are actually allies of T-Bot crimson and T-Bot emerald, as seen in "Attack of the Turbo Tibbles." The T-Bot Team calls them "friendly robots."

Bob is a robot made by Dr. Zimmer.

Arthur

 * 106b. Arthur Accused!
 * 310a. Attack of the Turbo Tibbles
 * 409a. What is that Thing?

Books

 * Chapter Book #5: Arthur Accused!