|Also Known As||None|
|Voice Actor||Thom Adcox Hernandez|
|First Appearance||"Susie Goes Bad Lite" (2007)|
|Last Appearance||"Susie Goes Bad Lite" (2007)|
Mr. Marsh is the math teacher at Jim Jr. Junior High. He is a teacher who isn't that great at math as he is shown forgetting the answers to equations he has put up on the board. He makes his first and only appearance in the episode "Susie Goes Bad Lite". He is described by Brianna as the "worst math teacher ever".
Mr. Marsh is a light skinned man with white hair on the sides of head, indicating that he's balding. He wears a brown suit with a white shirt and red tie.