A Wizard Bug is a flying insect that inhabits the Wizard World. If bitten by one, the victim will gradually transform into a giant bug similar to a cockroach. When bitten by a Wizard Bug, disgusting amounts of grease and acid drip from the victim's face, melting virtually anything it touches.

This bite also causes the victim to behave in a strange and frantic manner. The transformation will linger for a few days until the effect of the venom wears off. Jerry is the only person in the series to have gotten bitten by a wizard bug. When bitten by a wizard bug, the person who has gotten bitten has an appetite for metal of such including copper, gold, and bronze.

Why do they bitte victims?