Koichi Tohei

Koichi Tohei (20 January 1920 – 19 May 2011) was a first one to be promoted to a 10 Dan by the Morihei Ueshiba ever. He taught people like Hiroshi Tada, Seigo Yamaguchi, Mitsugi Saotome, Sadateru Arikawa, Kazuo Chiba, Yoshimitsu Yamada, Steven Seagal and many others.

Masando Sasaki

Masando Sasaki (February 1, 1929 – February 15, 2013) – was an 8 Dan Aikido Aikikai Shihan and a Shinto priest. Was an Otomo for the O-Sensei and been teaching in the Hombu Dojo.