Kinnikuman Super Phoenix

Kinnikuman Super Phoenix, originally Phoenixman (フェニックスマン), was one of the  (運命の五王子, Unmei no Go Ouji) and the main antagonist of the penultimate story arc of the manga and anime series Kinnikuman.

Story
Super Phoenix was born Phoenixman, in the same hospital and on the same day as and four other boys. A fire broke out in the wing of the hospital where they were being kept and in the chaos they may have been mixed up leading to confusion over the identity of the true heir to the throne of planet Kinniku. Phoenixman grew up poor and alone, hoping that he could prove himself to be the heir and be taken away from his misery. He had planned on entering a tournament to become the next successor to the throne, but was unable to gain sponsorship by the death of his father (King Tōn, the pig that was mistaken for the real Kinnikuman, is believed to have won this tournament). Phoenixman's misery only increased when Kinnikuman was revealed as the prince of planet Kinniku, as he was (in Phoenixman's eyes) an idiot who got money and recognition without working for them, while Phoenixman was intelligent and had to struggle to survive. He hated Kinnikuman with a passion and trained vigorously to one day defeat him and take the throne. He would eventually develop a deadly Heart Disease, but ignored it in order to continue his training.

When Kinnikuman had proven to his family that he was worthy to become the next king because of his various championships and victories over various villains, five evil gods began to fear his interference in their plans. They decided to seek out the five other possible heirs and have them present their claims to the throne as well, resulting in a wrestling tournament to determine the most worthy successor. Phoenixman was chosen by the God of Intelligence to be his champion against Kinnikuman's ascension, and he relished the chance to get revenge on Kinnikuman and claim the throne he believed was rightfully his (shortly before this, his dying mother had told him that he might be the true prince). He became Kinnikuman Super Phoenix and gathered a team of powerful, ruthless choujin to assist him.