|"3rd Grade Male Rat (Number 3)" is not an official name.|
|3rd Grade Male Rat|
|Cartoon debut||"The Return of the King"|
3rd Grade Male Rat is a rat that looks like a young version of Mr. Ratburn. He wears the Glenbrook uniform with a white collared shirt, a dark blue tie, light blue V-neck shirt, and a medium blue jacket bearing the Glenbrook insignia. Only his hair makes him similar to Alex.