Mouse-Zilla

Mouse-Zilla is an enormous robotic mouse created by Tobey during his collaboration with Dr. Two-Brains. It's built in a similar style to his other robots, with multi-jointed arms, shoulder guards, and an antenna on its head. However, in addition to being definitely more mousey than his more humanoid creations, Mouse-Zilla is made with a special kind of flexible yet sturdy metal created by Two-Brains. Mouse-Zilla also features several quirks, like extendible grabbing whiskers and an energy-bubble-making machine on its nose.

Mouse-Zilla has so far only appeared in the episode named after it, "Mouse-Zilla". It was mainly used, throughout the duration of the episode, to break into cheese reserves throughout the city and steal all of their contents, though Tobey wanted to use his creation to destroy the "really tall state building".

So far, Mouse-Zilla is the robot that has come the closest to destroying WordGirl. It managed to capture her in it's extendible whiskers and would have crushed her if it wasn't for Captain Huggyface stealing the remote and commanding the robot to release her.

At the end of the episode, WordGirl throws Mouse-Zilla into the city's bay. However, Mouse-Zilla is seen to have survived, so its return is very possible in a future episode.

The name Mouse-Zilla is a parody of the Japanese monster Godzilla.