Argon

Argon is a supervillian in the Marvel Comics his main enemies include Spider-Man and  the Deadly Bat

Origin
Johnathon Kessler was a ordinary scientist studying many things but the biggest thing he wanted to study was noble gases he was really fascinated with all that stuff so he insisted on taking his classmates to a field trip to a nuclear power plant. There, it suddenly collapsed TBD.

Powers and Abilities
he can control a powerful noxious gas with a machine he made on his own. He can also control people using gas.