Deadpan Snarker: Weirdly enough, the Batwing: when Alfred has the plane's autopilot computer take him to the secret labor camp where Batman is being held prisoner, the plane locates Batman but can't find a safe place to land. Alfred demands that the "tin can" land them at once, to which the Batwing replies "your funeral." It even tells Alfred to "watch [his] step" getting out after the harrowing landing.
Disposable Vagrant: Batman gets involves himself in a city-wide kidnapping and forced labor plot because the police are too busy to bother with homeless people disappearing.
Fat Bastard: One-Shot villain Boss Biggis. Morbidly obese (the voice-actor actually ate while recording his lines to give the proper feel for the character) and running an actual slave labor camp, naturally, so he doesn't have to do or pay for any work himself.