Career
His film credits span three decades, from 1960 to 1990. One of his prominent appearances was in the lead role in Pastoral: To Die in the Country. Suga also appeared in The Gate of Youth, Sword of the Beast, and Theater of Life.
He also portrays Souichiro Akizukithe father of Nobuhiko, Kyoko and also the foster dad of the protagonist Kotaro Minami in the tokusatsu series Kamen Rider Black.
A frequent television guest star, Suga acted in jidaigeki and contemporary shows. Twenty appearances on Abarenbō Shōgun, thirteen on Zenigata Heiji, eleven on Momotarō-zamurai, nine on Ōoka Echizen, seven on Edo o Kiru, and numerous guest roles on various programs in the Hissatsu series top his list of roles.