Ryo Aitaka

Ryo Aitaka is a retired Japanese kickboxer, who competed in the cruiserweight and heavyweight divisions of K-1. He was a one-time K-1 Cruiserweight title challenger, having challenged for the title in 2020. In 2023, he took up professional wrestling, training at the Ibushi Prowrest Lab, and made his debut for Gleat on December 30, under the ring name Riki Aitaka . ^{Ryo Aitaka, Japanese kickboxer and professional wrestler}

31 December 1989

Born on the same birth date (31 December 1989): Kelvin Herrera

Born on the same birth day (31 December): Arima Yoriyuki • Felix Rexhausen • Gerry Dee • Hugh Nelson (Australian politician) • Julio DePaula • Katie Volynets • Laxman Sivaramakrishnan • Lionel Daunais • Luis Zuloaga • Lyudmila Pakhomova

Born in the same month (December 1989): Andrew Nicholson (basketball) • Jacob Stallings • Kei Nishikori • Kelvin Herrera • Mark Ingram II • Matteo Darmian • Mikkel Bødker • Nichole Sakura • Robert Turbin • Sam Burgess • Sotelúm • Tomasz Narkun