Mobot as seen in Mobot Knows Best.

Mobot is a robot built by Tobey. She appears in the episode Mobot Knows Best, and was built by Tobey to pose as his mother for a parent teacher conference.  After Ms. Davis accidentally makes a comment that offends Mobot, she goes haywire and tries to destroy Ms. Davis, until she is defeated by WordGirl, The Amazing Rope Guy, and Tobey's real mother.