John de Lancie (born March 20, 1948 in Philadelphia) is an American actor. He is best known for playing Q in three of the Star Trek TV series, and has had a prolific career in animation, audio dramas, films, video games and on stage.
On September 21, De Lancie tweeted "For Assassin's Creed fans... just voiced the father of the hero. Again, really nice group to work with." 
Assassin's Creed roles
- John de Lancie at the Internet Movie Database