Sam Witwer  Samuel Stewart Witwer (born October 20, 1977) is an American actor, voice actor, and musician. He is known for playing Crashdown in "Battlestar Galactica", Davis Bloome in "Smallville", Aidan Waite in "Being Human", Mr. Hyde in "Once Upon a Time", and Ben Lockwood in "Supergirl". He has voiced Starkiller in "", the Son in "" and Emperor Palpatine in "Star Wars Rebels". He has voiced Darth Maul in "The Clone Wars", "Rebels" and "". In 2019, he joined the cast of "Riverdale" as Jughead Jones' school teacher Mr. Rupert Chipping. Witwer voiced protagonist Deacon St. John in the PlayStation 4 game "Days Gone" released in 2019 by SIE Bend Studio. Witwer was born on October 20, 1977, and grew up in Glenview, Illinois, a small suburb outside of Chicago. He attended Glenbrook South High School, during which time he was involved in drama and theater classes, as well as being the lead singer of a high school band called "Love Plumber". He attended the Juilliard School for a time before moving to Los Angeles. Witwer's first on-screen credit was that of a Chicago Bulls commercial. He soon found himself in speaking roles on hit television series, such as "ER". Witwer's first major recurring role came in the form of portraying Lt. Crashdown on "Battlestar Galactica", although he has credited much of his current success to his role as Neil Perry on the Showtime series "Dexter". Witwer also appeared as Private Wayne Jessup in the movie "The Mist". From 2008 to 2009, Witwer was cast in season 8 of "Smallville" as Davis Bloome, a charming paramedic who struggles with a darkness within as he is the human camouflage of Doomsday, a character in the comics best known for being the only villain to have "killed" Superman. While Witwer played Davis, Doomsday was played by stuntman Dario Delacio. Witwer's performance in "Smallville" was incredibly well-received, and he has stated that his experience on the show had opened more opportunities for him in the future of acting. Witwer’s contract gave him the option to return in Season 9 as Zod in the event the show was renewed, though he ultimately declined. Though he considered his time on the show enjoyable and was flattered by the offer to stay on, he passed on the role as he felt it would be difficult for both the characters and audience to accept.