Volcano is a tall man with a very muscular physique, large brown eyes, and orange, flame-shaped hair. He wears a baggy, navy blue bodysuit, and very bulky, rock-like boots, gauntlets, and shoulder pads. These accessories are lined with pores that expel smoke. He also wears a gas mask strapped to his shoulder pads, and an orange belt.
Not much is known about his personality.
- Volcannon (ヴォルカノン Vorukanon?): By hitting the ground with his right arm, Maguma concentrates a large amount of lava to shoot in multiple directions.
Shoulder Pads and Gauntlets: The devices on his hands and shoulders allow him to launch his fire farther, and the shoulder pores seem to help him regulate body temperature.
Mask: Located in the middle of his mask is a mercury thermometer for an unknown purpose. (Most likely also for the purpose of regulating body temperature.)
- His surname, Iwata, contains the kanji for “boulder/rock/cliff” (岩 iwa?) and “rice field” (田 ta?). His given name, Maguma, means “mingle/association” (交 ma?) and “horse” (馬 uma?).
- His given name is homophonous to the Japanese pronunciation of "magma".
- Maguma is similar to Endeavor in appearance, with both characters wearing a blue suit, large boots and gauntlets. Both characters also have a Quirk revolving around fiery substances.