The Intruders actor will join the Canadian clone drama with Kyra Harper, Ksenia Solo and Earl Pastko as it enters its third season, The Hollywood Reporter explains.
Frain will play character Ferdinand, described as a “a well-educated, powerful player in a secretive, multi-national political faction.”
Tatiana Maslany stars in the space drama created by John Fawcett and Graeme Manson.
Season three of Orphan Black will consist of ten episodes and will debut in spring 2015.