Tomo Yoshida had always suspected that his nephew Shiro, who would later be known as Sunfire, was a mutant and took him to irradiated ruins in Hiroshima, which triggered Shiro's mutant powers. He trained the young boy in the use of his powers, while at same time fanning hatred against the USA. He manipulated him into attacking targets in the USA while on a trip with his father Saburo Yashida, who was a delegate to the United Nations. When Saburo tried to stop Sunfire from attacking the U.S. Congress, Tomo shot him from behind. Sunfire killed Tomo in retaliation.
- 3 appearance(s) of Tomo Yoshida (Earth-616)
- 1 appearance(s) in handbook(s) of Tomo Yoshida (Earth-616)
- 2 mention(s) of Tomo Yoshida (Earth-616)
- 1 image(s) of Tomo Yoshida (Earth-616)