A bug, scrambled within the level to anything that is a three-letter combination of B, U, and G, is an enemy that appears in the developper's computer. It is intended to be a bug, similar to that of a virus or error— not as in the small invertebrate. It has three hundred hit points although its displayed max health can be any value, it being in the last level. Its weapon is completely random selected from past enemies and some that have not been seen before, including bosses, meaning luck might mean everything.

A list of possible weapons are in hard mode and their damages:

In normal mode, the following weapons are also possible:

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