(possibly harmless)
Cell #1
#B1001-Daffy Duck. Some say he is insane. Others say he is just silly.
Cell #2
#B1002-Yosimite Sam. The wildest, most violent midget in the world. He's completely witless, and he's nothing without his guns. HEY, WHO LET HIM HAVE GUNS IN HIS CELL?!
Cell #3
#B1003-Delerium of the Endless. She's silly, and basically a child at play, with the world and it's realms as her playground.
Cell #4
#B1004-Duckman. He's one sick puppy! He's really only dangerous to himself, but in here, he is denied access to his decadent desires.
Cell #5
#B1005 and #B1006-Pinky and The Brain. They are constantly plotting to take over the world. The small one suffers from megalomania, and would be a criminal genuis if the larger one, which suffers from idiocy, didn't inadvertently twart all of his plans. How dangerous could two lab rats be anyway?