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.

Main/Featured Characters

 * Sara Lance/White Canary
 * Martin Stein/Firestorm
 * Jefferson Jackson/Firestorm
 * Ray Palmer/The Atom
 * Amaya Jiwe/Vixen
 * Gideon
 * Zari Tomaz
 * Mick Rory/Heat Wave
 * Leo Snart/Citizen Cold
 * Kara Zor-El/Kara Danvers/Supergirl
 * Alex Danvers
 * Oliver Queen/Green Arrow
 * Felicity Smoak
 * John Diggle
 * Curtis Holt/Mr. Terrific
 * Rene Ramirez/Wild Dog
 * Dinah Drake/Black Canary
 * Barry Allen/The Flash
 * Iris West-Allen
 * Caitlin Snow/Killer Frost
 * Cisco Ramon/Vibe
 * Harrison Wells
 * Ray Terrill/The Ray

Villains

 * Oliver/Dark Arrow
 * Kara/Overgirl
 * Eobard Thawne/Harrison Wells/Reverse-Flash
 * Metallo

Other Characters

 * Lily Stein
 * Clarissa Stein
 * Ronnie

Objects

 * Waverider
 * White Canary suit
 * Firestorm suit
 * Quantum splicer
 * Firestorm Matrix
 * Firestorm cure
 * A.T.O.M. Exosuit
 * Vixen suit
 * Zari Tomaz's suit
 * Citizen Cold suit
 * Supergirl suit
 * Green Arrow suit
 * Mr. Terrific suit
 * Wild Dog suit
 * Black Canary suit
 * The Flash suit
 * Killer Frost suit
 * Vibe suit
 * Vibe gauntlets
 * Vibe glasses
 * The Ray suit
 * Dark Arrow suit
 * Overgirl suit
 * Reverse-Flash suit
 * Interdimensional extrapolator
 * Breach/Temporal gateway

Weapons

 * Bow and arrow
 * Guns
 * Heat gun
 * Cold gun
 * T-Spheres

Events

 * Nazi invasion

Locations

 * Earth-1
 * Central City
 * S.T.A.R. Labs
 * Pipeline
 * Star City
 * Bunker
 * Bunker