They're loosely patterned after Mario and Luigi in the series of Nintendo video games, who they claim to have been real persons and the ones who started the post. They deal death to the dire denizens of the dank dungeons beneath Whateley, between washing windows and other, more prosaic, tasks. They're a team, where one is, you'll find the other, just like Laurel and Hardy. They're introduced in Jade 2 - Away from Home
Being assigned to the sewers for detention is one of the worst punishments that's handed out.Whether it ranks ahead of or behind being assigned to Hawthorn is a matter of opinion. They refuse to accept Murphy in the sewers.
He's the larger, rounder one. He's quite the mouth to him.
He's the smaller, thin one. He's of Polish extraction, or as Morrie so eloquently puts it, "He's a polack". He's married; his wife makes his lunches.
They're normally found in their uniform overalls.