The Janitor is a character who first appears in the episode "Big Pink Loser."
He is an olive green fish with dark purple lips and light purple dorsal fin. He wears faded blue overalls, an orange shirt, and a small orange hat. He appears to have two jobs, as a delivery fish in "Big Pink Loser" and a garbage fish in "Sailor Mouth" and "Artist Unknown." He appears in multiple other episodes doing other jobs.