<Li> Katee Sackhoff as Amunet Black / Blacksmith </Li> <Li> Jessica Parker Kennedy as Nora West - Allen </Li> <Ul> <Li> Britne Oldford as Shawna Baez / Peek - a-Boo </Li> <Li> Mark Sweatman as Norvok </Li> <Li> Dominic Burgess as Ramsey Deacon / Kilg% re </Li> <Li> Sugar Lyn Beard as Rebecca Sharpe / Hazard and Clifford DeVoe / Thinker </Li> <Li> Chelsea Kurtz as Mina Chayton / Black Bison </Li> <Li> Violett Beane as Jesse Chambers Wells / Jesse Quick </Li> <Li> Danny Trejo as Josh / Breacher </Li> <Li> Vito D'Ambrosio as Anthony Bellows </Li> <Li> Emily Bett Rickards as Felicity Smoak </Li> <Li> Riley Jade Berglund as Joanie </Li> <Li> Matt Afonso as Weeper </Li> <Li> Stephen Amell as Oliver Queen / Green Arrow and Dark Arrow </Li> <Li> Victor Garber as Martin Stein / Firestorm </Li> <Li> Caity Lotz as Sara Lance / White Canary </Li> <Li> Chyler Leigh as Alex Danvers </Li> <Li> Franz Drameh as Jefferson Jackson / Firestorm </Li> <Li> Paul Blackthorne as Quentin Lance / Sturmbannführer </Li> <Li> Jeremy Jordan as General Schott </Li> <Li> Juliana Harkavy as Dinah Drake / Black Canary </Li> <Li> Melissa Benoist as Kara Zor - El / Kara Danvers / Supergirl and Overgirl </Li> <Li> Wentworth Miller as Leonard Snart / Citizen Cold </Li> <Li> Russell Tovey as Ray Terrill / The Ray </Li> <Li> Frederick Schmidt voices Metallo - X </Li> <Li> Kendrick Sampson as Dominic Lanse / Brainstorm and Clifford DeVoe / Thinker </Li> <Li> Mark Valley as Anton Slater </Li> <Li> Ryan Alexander McDonald as Neil Borman / Fallout </Li> <Li> Devon Graye as Axel Walker / Trickster </Li> <Li> Corinne Bohrer as Zoey Clark / Prank </Li> <Li> Bill Goldberg as Dave Ratchet / Big Sir </Li> <Li> Derek Mears as Sylbert Rundine / Dwarfstar </Li> <Li> Paul McGillion as Earl Cox </Li> <Li> Miranda MacDougall as Izzy Bowin / Fiddler and Clifford DeVoe / Thinker </Li> <Li> John Wesley Shipp as Jay Garrick </Li> <Li> Leonardo Nam as Matthew Kim / Melting Point </Li> <Li> Max Adler as Jaco Birch / Pyro </Li> <Li> Bethany Brown as Janet Petty / Null </Li> <Li> Arturo Del Puerto as Edwin Gauss / Folded Man </Li> <Li> Katie Cassidy as Siren - X </Li> <Li> David Ramsey as John Diggle / Spartan </Li> <Li> Victoria Askounis as young Caitlin Snow </Li> </Ul> <Li> Britne Oldford as Shawna Baez / Peek - a-Boo </Li>

Who is the bad guy at the end of the flash season 4 episode 1