In which TV series is Dr. Robby Robinavitch a main character?

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'? Who played Tanya McQuoid in 'The White Lotus'? Who voices Homer Simpson in 'The Simpsons'? Who voices Marge Simpson in 'The Simpsons'? Who voices Bart Simpson in 'The Simpsons'?