There's a C-Rank Villain named Mustard. His Quirk is Gas, which produces a poisonous miasma that swirls around him. He can tell where opponents are by movements in the vapor, which is thickest at his location. If you Google the MHA character, the AI overview box will show you pictures of the condiment, but it actually does tell you about Mustard the Villain. If you wanna see what he actually looks like let me know.
