His sprite is the same as the Gourmet Guy from Paper Mario on the Nintendo 64.
He usually makes cameos, but had a somewhat major role in the video "Who let the Chomp out?".
He tends to squish people by sitting on them.
Though he doesn’t actually appear in the video, Shrek acts the same way he does in the Kushroom Mingdom, and sings the same song.
He was one of the fat people that King Boo placed inside paintings.
Ironically, Mario himself would proceed to sit on Bowser's minions and sing the same song. This caused him to be in debt to Bowser.
His famous line, This is what I do I sit on you!, is a reference to Tim and Eric Awesome Show, Great Job! where the actor, Palmer Scott, invented it and sitting on peoples' laps, and head, and leaning on people.