|English Name||Metal Moth (Localized)|
|Namesake||Iron Butterfly (American psychodelic rock band)|
|Manga Debut||JJAA: BT, Chapter ???: "Iron Butterfly & Slipknot Part 1"|
|Anime Debut||JJAA: BT, Episode ???: "Iron Butterfly & Slipknot Part 1"|
Iron Butterfly is exactly what it says on the tin, a swarm of robotic butterflies that form around Pietro, the triangular patterns on their wings look like scared faces.
Mineral Manipulation: Iron Butterfly is able to control any type of mineral: ores, metals, salts, etc. . .
Vampirism: The individual bodies of Iron Butterfly can use their straw mouths to suck out a target's blood to get stronger.