Mosquito Girl

Mosquito Girl is a prototype artificial mutant created by Dr. Genus of the House of Evolution, one of the first threats Saitama and Genos face together.

Despite her mostly human appearance, Mosquito Girl playfully regards people and animals alike as prey, constantly craving their blood while treating her swarm of mosquitoes with an almost maternal affection. Arrogant even in danger, she insults opponents as readily as she attacks them, only mildly irritated by setbacks that would panic most villains. After her defeat, she ends up working at a takoyaki restaurant instead, acting noticeably friendlier toward people — though she still needs blood regularly, and gets short-tempered fast whenever she goes without it.