People: Dylan O'Brien Says He Remains Close with His Teen Wolf Cast: 'Nothing Can Replace Those Types of Experiences' (Exclusive) - The 'Twinless' star played Stiles Stilinski on 'Teen Wolf' for six seasons from 2011 to 2017 - Dylan O'Brien had a mini Teen Wolf reunion with former costar Arden Cho at the Astra Film Awards on Jan. 9