The Half-hamster is the result of a teleporter attempt by Dr. Cockroach. It has appeared in Maximum B.O.B, The Wormhole Has Turned, The Two Faces of Dr. Cockroach, the sorry syndrome, Screaming your calls (where it is seen that he wants to be seen by Dr. C as his father) and It Came From Level Z. When Dr. Cockroach made his last failed attempt at teleportation, the mad scientist explained that he gave up after he used the unfortunate guinea pig. After its scientific contribution, it's lost half of its body mass, two legs and has great difficulty running.
First appearance
It's usually seen with General Monger, playing card games with him.