Killer The Butcher is a merciless leader of the Gaizok invasion of earth and the primary antagonist of the series. Butcher is of an unknown alien race, though it's eventually made clear the race had barbaric warrior tendencies. He will use any means necessary to eradicate the human race and often comes up with despicable schemes to do so. He gets enjoyment out of making humans suffer and purposely prolongs their seemingly inevitable demise by attacking the planet little by little instead of using all of his force at once. He is extremely gluttonous and is almost always eating pieces of meat. He is also very self centred and demands constant attention from his subordinates. He becomes angry when his subordinates fail to carry out his orders but doesn't punish them severely or over-react.

The wandering doctor mouse. Every time he gets drunk, he reads poetry out loud. He also has sensitive ears that pick up sound the other mice cannot hear.

Akira Shimada

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