The Rubber Pants Commandos
The Rubber Pants Commandos are a team of gun-toting babies who occasionally come to Sam & Max' rescue (usually with impeccable timing). They appeared in Night of the Gilded Heron-Shark and later in Max's Big Day and The Final Episode. They are lead by the chimpanzee Sergeant Blip.
Sergeant Blip maintains that HIS set of rubber pants are because you will never see a chimpanzee's rump on a list of things that are pleasant to look at.