In which TV series is Mariko a main character?

Who played Ellie Williams in 'The Last of Us'? Who played Toranaga in 'Shōgun'? In which TV series is Toranaga a main character? Who played Mariko in 'Shōgun'? Who played Lucy MacLean in 'Fallout'? Who played The Ghoul in 'Fallout'? In which TV series is The Ghoul a main character? Who played Dr. Robby Robinavitch in 'The Pitt'?