Shiro Yoshida grew up with a huge resentment against the United States. His mother was exposed to the radiation of the atomic bomb at Hiroshima and she died during his birth. His dad,a member of the Japanese Clan Yashida, became a diplomat to the United Nations and Shiro was pretty much raised by his uncle.

Shiro's uncle Tomo took him to a site in Hiroshima, and got him to touch the ground. There, the radioactive soil somehow triggered his mutation. Shiro trained for months before he was able to control his flame fully. His uncle Tomo was purely anti-America. He instilled his hatred upon Shiro and is responsible for giving him his costume and codename of Sunfire.

Uncanny AvengersEdit

Sunfire will become a member of the Uncanny Avengers. Ιt was shown that in three months he will be working with Havok and Scarlet Witch in a future where Red Skull had become Onslaught and took over as seen in his vision to Captain America.

Powers and AbilitiesEdit


Sunfire is a mutant.

Solar Flare: Shiro's mutant powers enable him to absorb solar and other radiation to generate the process of ionized matter (usually air) through a mentally-triggered unknown biochemical process so that it is converted to plasma, the superheated state of matter. Plasma is the state in which matter making up the sun exists; hence, Sunfire refers to his projecting "solar fire". Hence he can sheath his body in flame.

Flight: He can use his powers to create super-heated air currents which push him forward through the air, enabling him to fly. Sometimes this super-heated air is visible as a trail of flame behind Sunfire. The upper limit to the speed Sunfire can achieve in flight is not yet known, although it is known to be greater than that of the Angel, who can reach 150 miles per hour.

Plasma Blasts: He has the ability to project the flames he generates as powerful blasts of energy.

Plasma Emanation: Sunfire can generate plasma temperatures which match those that can be generated by the Human Torch, reaching about 1,000,000 degrees Fahrenheit at maximum level. He can also use his power in a massive blast similar to Johnny Storm's "Nova Burst". However, Shiro has much more control over the area of effect, enough to where one person may feel like they have been sunbathing all day to total incineration of another target.

Heat Signature Sense: He has the ability to sense beings by the heat signature that they give off.

Plasma Shield: He has the ability to manipulate the plasma around him to form an aura that can melt incoming bullets are stave off other attacks.

Solar Shielding Psi-field: He is protected from the heat and radiation he emits by a short-range psionic force field which automatically comes into being whenever there is air friction, and also prevents excessive amounts of light from the plasma from reaching his eyes so as to blind or damage them. Sunfire's body emits a protective field whenever he uses his powers. However, it is speculated that he can generate power in excess of his natural protection.