Masa Saito
Hiro Saito was the first Japanese wrestler to use and popularize the diving senton, or seating splash off the top rope, in matches. He is not related to Masa Saito, despite sharing name and appearance (aside from the blond hair); Hiroyuki shortened his name to "Hiro" to copy him (since Masa Saito's real name is Masanori) and also as a meaning of sharing fortune ("good luck").