Marc Geller. Actor: Severance. Marc Geller is a stage and film actor known for Severance, Katy Keene, A Different Man, Daredevil: Born Again, The Onion and The Eric André Show. Stage credits include Arena Stage - The Amazing Karnak in Ride the Cyclone, Ned Weeks in The Normal Heart, Joshua/Cathy in Cloud 9, Actor 1 in Baskerville, The Ghost of Jacob Marley in A Christmas Carol, Ira in The Tale...