Special Guest Stars Brandon Routh as Ray Palmer / The Atom Franz Drameh as Jefferson "Jax" Jackson / Firestorm Victor Garber as Professor Martin Stein / Firestorm Arthur Darvill as Michael "Rip" Hunter Courtney Ford as Eleanor "Nora" Darhk Wentworth Miller as Len Snart / Captain Cold Guest Stars Raffi Barsoumian as Bishop Falk Hentschel as Carter Hall / Hawkman Credit Only Matt Ryan as Dr. Gwyn Davies Uncredited Tala Ashe as Zari Adrianna Tomaz Jes Macallan as Assistant Ava