• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: Stephen Amell (Oliver Queen aka Green Arrow)
• Guest Starring: John Rubinstein (Albert Einstein), Matthew MacCaull (Commander Steel), Kwesi Ameyaw (Dr. Mid-Nite), Sarah Grey (Stargirl)
• Co-Starring: Christiaan Westerveld (King Louis XIII), Christina Jastrzembska (Mileva Maric), Rebecca Eady (Queen Anne of Austria), Thorsten Heimann (Head Scary German), Tristan Jensen (Bodyguard), Michael Germant (German Sailor), David Raynolds (King), Don House (Villager)
• Teleplay By: Marc Guggenheim & Phil Klemmer
• Story By: Greg Berlanti & Chris Fedak
• Directed By: Dermott Downs

• Special Guest Star: Patrick J. Adams (Rex Tyler aka Hourman)
• Guest Starring: André Eriksen (Baron Krieger), Matthew MacCaull (Henry Heywood aka Commander Steel), Sarah Grey (Stargirl), Kwesi Ameyaw (Dr. Mid-Nite), Dan Payne (Todd Rice aka Obsidian)
• Co-Starring: Ashley O'Connell (French Doorman), Doug Abrahams (General Gerd Von Rundstedt), Ian Rozylo (German Officer), Christopher Thorgard De-Schuster (Guard), Oliver Rice (Nazi #1), Sean Oliver (Scared Curator)
• Written By: Chris Fedak & Sarah Nicole Jones
• Directed By: Michael Grossman

• Guest Starring: Mei Melançon (Masako Yamashiro), Christopher Naoki Lee (Head Samurai), Sab Shimono (Ichiro Yamashiro), Stephen Oyoung (Shogun Tokagawa Iemitsu)
• Special Guest Star: Grant Gustin (Barry Allen aka the Flash)
• Written By: Phil Klemmer & Grainne Godfree
• Directed By: Kevin Tancharoen

• Guest Starring: John Churchill (General Ulysses S. Grant), Dean S. Jagger (Collins)
• Co-Starring: Alex Barima (Abraham), Warren Belle (Henry Scott), Tintswalo Khumbuza (Mary), Joshua Hinkson (Plantation Hand), Ryan Bolton (Lead Union Soldier), Aadin Church (Slave), Ian Hanlin (Survivor)
• Written By: Marc Guggenheim & Ray Utarnachitt
• Directed By: Michael Allowitz

• Special Appearance By: Neal McDonough (Damien Darhk)
• Guest Starring: Graeme McComb (Young Martin Stein), Emily Tennant (Young Clarissa Stein)
• And: Lance Henriksen (Todd Rice aka Obsidian)
• Co-Starring: Dimitri Vantis (Boris), Adrien Cote (Drug Dealer), Randene Neill (Female Reporter), Darren Matheson (Secret Service Agent), Ronda Cavanagh (Tour Guide), Evan Frayne (U.S. Delegate)
• Written By: Keto Shimizu & Grainne Godfree
• Directed By: David Geddes

• Guest Starring: Johnathon Schaech (Jonah Hex), Christina Brucato (Mystery Woman)
• And: Jeff Fahey (Quentin Turnbull)
• Co-Starring: Alexander Forsyth (Bartender), Chris Cannon (Dealer), Shayne Elliot (Desperado #1), Charles Andre (Guard), David Lovgren (Head Bandit), Ross Douglas Noble (Office Manager), Laura Jacobs (Prostitute), Joel Cottingham (Searcher)
• Written By: Matthew Maala & Chris Fedak
• Directed By: Cherie Nowlan

• Special Appearances By: Stephen Amell (Oliver Queen aka Green Arrow), David Ramsey (John Diggle aka Spartan), Emily Bett Rickards (Felicity Smoak), Danielle Panabaker (Caitlin Snow), Carlos Valdes (Cisco Ramon aka Vibe)
• With: Melissa Benoist (Kara Danvers aka Supergirl)
• And: Grant Gustin (Barry Allen aka The Flash)
• Guest Starring: Christina Brucato (Lily Stein), Donnelly Rhodes (Glasses), Lucia Walters (President of the U.S.A.)
• Co-Starring: Jacob Richter (Younger Glasses)
• Teleplay By: Phil Klemmer & Marc Guggenheim
• Story By: Greg Berlanti
• Directed By: Gregory Smith

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: John Barrowman (Malcolm Merlyn)
• And: Wentworth Miller (Leonard Snart)
• Guest Starring: Isaac Keoughan (Al Capone), Cole Vigue (Eliot Ness)
• Co-Starring: Sean Campbell (Agent Cole Bennett), Cameron Dent (Bartender), Darryl Scheelar (Driver), Dan Rizzuto (Goon), Donal Thoms-Cappello (Police Officer)
• Written By: Sarah Nicole Jones & Ray Utarnachitt
• Directed By: Ralph Hemecker

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: John Barrowman (Malcolm Merlyn)
• Guest Starring: Matt Angel (George Lucas)
• Co-Starring: Jesse Stretch (Biker), Martin Van Steinberg (Cop), Bruce Blain (Desk Sergeant), Simon Arblaster ("Rip"), Daniel Letto ("Vandal")
• Written By: Keto Shimizu & Chris Fedak
• Directed By: Dermott Downs

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: John Barrowman (Malcolm Merlyn)
• Guest Starring: Christina Brucato (Lily Stein), Randall Batinkoff (George Washington)
• Co-Starring: Camden Filtness (Lieutenant), Brad Harder (Teller)
• Written By: Phil Klemmer & Marc Guggenheim
• Directed By: Eric Laneuville

• Guest Starring: Randall Batinkoff (George Washington)
• Co-Starring: Boyd Ferguson (Lieutenant Cadwalader), Noel Johansen (Lieutenant General Cornwallis)
• Written By: Grainne Godfree & Matthew Maala
• Directed By: Alice Troughton

• Special Appearance By: Neal McDonough (Damien Darhk)
• Guest Starring: Sarah Grey (Stargirl), Kwesi Ameyaw (Dr. Mid-Nite), Elyse Levesque (Guinevere), Nils Hognestad (King Arthur)
• Co-Starring: Andrew Mockler (Awed Knight), Neil Webb (Sir Galahad), Mark James (Squire)
• Written By: Anderson MacKenzie
• Directed By: Antonio Negret

• Co-Starring: Sean MacLean (John Swigert)
• Written By: Keto Shimizu & Ray Utarnachitt
• Directed By: Ralph Hemecker

• Guest Starring: Matthew MacCaull (Henry Heywood aka Commander Steel)
• Co-Starring: Milo Shandel (Flight Director), Devin Johnston (Fred Haise), Patrick Lubczyk (Hank Heywood), Kent Thomson (Jim Lovell), Sean MacLean (John Swigert), Jesse Reid (Capcom), Adam Pateman (Guidance), Lana Jalissa (NASA Tour Guide), Bola Omodara (Security Agent)
• Written By: Grainne Godfree
• Directed By: Kevin Mock

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: John Barrowman (Malcolm Merlyn)
• And: Wentworth Miller (Leonard Snart)
• Guest Starring: Jack Turner (J.R.R. Tolkien)
• Co-Starring: Michael Robinson (Commanding Officer), Brian Knox McGugan (German Commanding Officer), Hans Potter (German Soldier), Derek Wallis (Injured Soldier), Chris Cope (Junior Officer), Andrea Ware (Volunteer)
• Written By: Keto Shimizu & Matthew Maala
• Directed By: Ben Bray

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: John Barrowman (Malcolm Merlyn), Emily Bett Rickards (Felicity Smoak)
• And: Wentworth Miller (Leonard Snart)
• Co-Starring: Ryan Jinn (Assistant), Aason Nadjiwan (Police Officer), Jeff Craigen (Security Guard)
• Written By: Ray Utarnachitt & Sarah Hernandez
• Directed By: Mairzee Almas

• Special Appearance By: Neal McDonough (Damien Darhk)
• Special Guest Star: Katie Cassidy (Laurel Lance), John Barrowman (Malcolm Merlyn)
• And: Wentworth Miller (Leonard Snart)
• Guest Starring: Jack Turner (J.R.R. Tolkien)
• Written By: Phil Klemmer & Marc Guggenheim
• Directed By: Rob Seidenglanz