First appeared in Super Friends #8 in 1977 and was created by E. Nelson Bridwell and Ramona Fradon. Izumi Yasunari is a Japanese solar physicist who is a longtime member of the Global Guardians. His grandparents were survivors of the atom bomb dropped on Nagasaki, Japan, by the U.S. in 1945, which brought World War II to an end. Both of them later developed cancer and died. The same happened to Yasunari's mother also developed cancer but recovered with chemotherapy. A horrified Yasunari and his brother, Wataru became doctors specializing in cancer research. Their troubled sister, Kaori, joined a religious cult. Rising Sun is a founding member of the Japanese equivalent of the Justice League of America, a team called Big Science Action which came together to defend the hero Ultimon from the Monster Army.