based on this post with Disney being a high school
Wally is probably the scruffiest janitor alive, and although he gets rid of the bigger trash, the place always looks dirtier after he’s passed, which makes it impressive that he and Mont (M.O.), the other janitor, are employed in the same place. You’d think he’d hate Wally, but he loves cleaning things so they are pretty fine.
Wally has a crush on the IT teacher Eve and she probably likes him back too, you think.