Elias Koteas
Elias Koteas is a Canadian actor of film and television, best known for his roles in Fallen, The Killing, and as Casey Jones in the liveaction first and third Teenage Mutant Ninja Turtles films. He currently costars as Alvin Olinsky on Chicago P.D..
Koteas was born in Montreal, Quebec, Canada, to a father who worked as a mechanic for the Canadian National Railways, and a milliner mother. His parents are both of Greek descent, from the Mani Peninsula and he is a fluent Greek speaker. Koteas attended Vanier College in Montreal before leaving to attend the American Academy of Dramatic Arts in New York in 1981, of which he is a 1983 graduate. He was a member of the Academys 198384 Production Company. He also attended the Actors Studio in New York City, where he studied acting under Ellen Burstyn and Peter Masterson.
Source: Wikipedia