Invasion! (Arrow)

Synopsis
Oliver wakes up to a life where he never got on the Queen's Gambit. Robert and Moira are alive and well. Laurel is his loving fiancée and their wedding is imminent. Everything seems perfect, but Oliver starts to notice small imperfections that make him question this new reality. Meanwhile, Felicity and the recruits take on a new threat with help from The Flash and Supergirl.

Protagonists

 * Team Arrow
 * Oliver Queen
 * Green Arrow/Spartan (John Diggle)
 * Speedy (Thea Queen)
 * Felicity Smoak
 * Mister Terrific (Curtis Holt)
 * Wild Dog (Rene Ramirez)
 * Ragman (Rory Regan)
 * Dominators' Alternate Reality
 * Quentin Lance
 * Laurel Lance
 * Moira Queen
 * Robert Queen
 * Team Flash
 * The Flash (Barry Allen)
 * Cisco Ramon
 * Supergirl (Kara Zor-El)
 * Legends
 * Sara Lance
 * Ray Palmer
 * Nate Heywood
 * Gideon
 * Firestorm (Jefferson Jackson)
 * Firestorm (Martin Stein)

Villains

 * Cyberwoman (Laura Washington)
 * Dominators' Alternate Reality
 * Dark Archer (Malcolm Merlyn)
 * Deathstroke (Slade Wilson)
 * Mirakuru Soldiers
 * Damien Darhk
 * Ghosts
 * Dominators

Other Characters

 * Tommy Merlyn
 * Roy Harper
 * David Hackett

Teams and Organizations

 * S.T.A.R. Labs

Species

 * Humans
 * Metahumans
 * Cyborgs
 * Kryptonians
 * Dominators

Objects

 * Green Arrow Suit
 * Spartan Suit
 * Speedy Suit
 * Mister Terrific Suit
 * Wild Dog Suit
 * Devarim Rags
 * The Flash Suit
 * Supergirl Suit
 * Waverider
 * Dominator Technology
 * Dominator Mothership
 * Dominators' Alternate Reality
 * Dark Archer Suit
 * Deathstroke Suit
 * Van Horn Industries Technology
 * Firestorm Suit
 * Quantum Splicer
 * Firestorm Matrix
 * Bow and Arrow
 * Oliver Queen's Bows and Arrows
 * Thea Queen's Bow and Arrow
 * Malcolm Merlyn's Bow and Arrow
 * Heat Gun

Locations

 * Earth-1
 * Earth
 * United States of America
 * Star City
 * Bunker
 * Van Horn Industries
 * Central City
 * S.T.A.R. Labs Central City Facility
 * NASA
 * Dominators' Alternate Reality
 * Star City
 * Bunker
 * Star Metro Police Precinct
 * Queen Mansion
 * Smoak Technologies