Bacteria is one of Mothra's biggest enemies. He appeared in the film The Mysterians where he grew to human size and got into a fight with Mothra's son, Minilla. He's a bad guy.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.