Callum Blue is an English film and television actor. 

Blue is best known for his roles on the Showtime series The Tudors and Dead Like Me; as well as for his role as Zod in the American television seriesSmallville; and for his role as Alex in the British television series The Secret Diary of a Call Girl alongside Billie Piper.

_{Biography from the Wikipedia article, licensed under CC-BY-SA}  

S.P. Krause co-wrote (with Shayne Armstrong) several episodes of K9.