Crisis on Earth-X, Part 4

Synopsis
Barry and Iris's wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow, Supergirl, The Flash and White Canary - lead their teams into battle to save the world.

Protagonists

 * Legends
 * White Canary (Sara Lance)
 * Firestorm (Martin Stein)
 * Firestorm (Jefferson Jackson)
 * Atom (Ray Palmer)
 * Vixen (Amaya Jiwe)
 * Steel (Nate Heywood)
 * Gideon
 * Zari Tomaz
 * Heat Wave (Mick Rory)
 * Super Friends
 * Supergirl (Kara Zor-El)
 * Alex Danvers
 * Team Arrow
 * Green Arrow (Oliver Queen)
 * Overwatch (Felicity Smoak)
 * John Diggle
 * Mister Terrific (Curtis Holt)
 * Wild Dog (Rene Ramirez)
 * Black Canary (Dinah Drake)
 * Team Flash
 * The Flash (Barry Allen)
 * Iris West-Allen
 * Killer Frost (Caitlin Snow)
 * Vibe (Cisco Ramon)
 * Harrison Wells
 * Freedom Fighters
 * The Ray (Ray Terrill)
 * Leo Snart

Antagonists

 * Freedom Fighters
 * Red Tornado
 * Nazis
 * New Reich
 * Schutzstaffel
 * Dark Arrow (Oliver)
 * Overgirl (Kara)
 * Reverse-Flash (Eobard Thawne)
 * Metallo
 * Wellenreiter A.I.
 * The Leviathan
 * Cupid (Carrie Cutter)
 * Nazis (Earth-1)

Other Characters

 * Lily Stein
 * Clarissa Stein
 * Ronnie
 * Andy Diggle
 * Carly Diggle
 * Ronnie Raymond
 * Leonard Snart
 * Kendra Saunders
 * Mister Terrific (Terry Sloane)
 * Maggie Sawyer
 * Mick Rory
 * Mengele
 * Felicity Smoak's Grandfather
 * Felicity Smoak's Grandmother
 * Lily Stein's Boyfriend

Teams and Organizations

 * Nazis
 * New Reich
 * Schutzstaffel
 * Legends
 * Super Friends
 * Team Flash
 * Team Arrow
 * Freedom Fighters
 * CCPD
 * Nazis (Earth-1)

Species

 * Humans
 * Metahumans
 * Artificial Intelligence
 * Ghosts
 * Robots
 * Humans (Earth-38)
 * Kryptonians (Earth-38)
 * Humans (Earth-X)
 * Kryptonians (Earth-X)
 * Robots (Earth-X)
 * Artificial Intelligences (Earth-X)
 * Cyborgs (Earth-X)
 * Time Remnants

Objects and Concepts

 * Waverider
 * White Canary Suit
 * Firestorm Suit
 * Quantum Splicer
 * Firestorm Matrix
 * Firestorm Cure
 * Quark Spheres
 * ATOM Exosuit
 * Dwarf Star
 * Vixen Suit
 * Zari Tomaz's Suit
 * Totems of Zambesi
 * Air Totem
 * Spirit Totem
 * Citizen Cold Suit
 * Citizen Cold Goggles
 * Supergirl Suit
 * Kal-El's Blanket
 * Green Arrow Suit
 * Mister Terrific Suit
 * Wild Dog Suit
 * Black Canary Suit
 * The Flash Suit
 * Killer Frost Suit
 * Vibe Suit
 * Vibe Gauntlets
 * Vibe Goggles
 * The Ray Suit
 * Dark Arrow Suit
 * Overgirl Suit
 * Reverse-Flash Suit
 * Inter-Dimensional Extrapolator
 * Breach/Temporal Gateway
 * Bow and Arrow
 * Oliver Queen's Bow and Arrow
 * Oliver's Bow and Arrow
 * Heat Gun
 * Cold Gun
 * T-Spheres
 * CFL Quark Matter
 * Kara Danvers' Glasses
 * Pulse Rifle
 * Terminator

Locations

 * Earth-X
 * Earth
 * United States of America
 * Star City
 * New Reich Facility
 * Earth-1
 * Earth
 * United States of America
 * Missouri
 * Central City
 * S.T.A.R. Labs Central City Facility
 * Pipeline
 * Time Vault
 * Stein Residence
 * Washington
 * Star City
 * Bunker
 * North Dakota
 * Salvation
 * Earth-38