Looks like this is now confirmed.
Japanese actor Hiroyuki Sanada is set for a major recurring role on the upcoming second season of Westworld, HBO’s multi-Emmy-nominated breakout sci-fi Western.
Sanada will play Musashi, but further details of the role remain under wraps.
Sanada joins new Season 2 cast members Neil Jackson, Jonathan Tucker, Katja Herbers, Talulah Riley and Louis Herthum.
Sanada will play Musashi, but further details of the role remain under wraps.
Sanada joins new Season 2 cast members Neil Jackson, Jonathan Tucker, Katja Herbers, Talulah Riley and Louis Herthum.
Source:
Although not a very reliable source historically, IMDB has gotten better over recent years.
We'll be sure to update if/when we hear anything official.