Age: 13
Height: 1.65m
Weight: 53kg
Blood Type: B
Birthdate: December 1
Birthplace: Japan
Training Place: Greece
Techniques: ????流星拳 (Pegasus Meteor Punch, Pegasasu Ry?sei Ken?), ????彗星拳 (Pegasus Comet Fist, Pegasasu Suisei Ken?), Pegasus Rolling Crush
Seiyuu: Toru Furuya (古谷 徹, ??? ???), Hiroko Emori (江森 浩子, ??? ??? ) child Seiya, Masakazu Morita (森田 成一, ??? ????) later series.

Seiya is the main character of the series. In most ways, he's a typical sh?nen hero, in the sense that he perseveres to the point of risking his life for what he believes in, and is not generally too complex in personality. Although not stunningly bright, Seiya uses and devises many fighting strategies in battle, cleverly adapting his style to the circumstances