UFO Senshi Dai Apolon

Takeshi, a 16-year-old boy at the BlueSky orphanage, starts an American football team. The team's game is interrupted by a UFO sighting, which leads to Takeshi discovering his true identity - he's the son of Apolon's king, spirited away by Rabi to escape General Dazaan's forces. As a result, Takeshi possesses special abilities that allow him to control underwater UFOs, which transform into synchronized robots to aid him in battles.