Elseworlds, Part 2

Synopsis
With Oliver and Barry still stuck in the other's bodies, the two get a lead on John Deegan and head to Gotham City with Supergirl to figure out why their reality has changed. While there, they meet the mysterious Kate Kane who provides them with information that leads the group to Arkham Asylum.

Main Characters

 * Team Arrow
 * The Flash (Oliver Queen)
 * John Diggle
 * Felicity Smoak
 * Curtis Holt
 * Team Flash
 * Green Arrow (Barry Allen)
 * Killer Frost (Caitlin Snow)
 * Cisco Ramon
 * Supergirl (Kara Zor-El)
 * Batwoman (Kate Kane)
 * The Flash (Barry Allen)

Villains

 * Dark Archer (Malcolm Merlyn)
 * Superman (John Deegan)
 * The Monitor (Mar Novu)
 * Kane Wolfman (Joe Wilson)
 * Kane Wolfman (Joe Wilson)
 * Kane Wolfman (Joe Wilson)

Other Characters

 * Ricardo Diaz

Organizations

 * CCPD
 * ARGUS
 * GCPD
 * Arkham Asylum
 * Wayne Enterprises
 * Wayne Enterprises

Objects

 * Green Arrow Suit
 * The Flash Suit
 * Supergirl Suit
 * Kal-El's Blanket
 * Batsuit
 * The Flash Suit
 * Breach
 * CFL Quark Matter
 * Kara Danvers' Glasses
 * The Monitor Armor
 * Deathstroke Suit
 * Bat-signal
 * Inter-Dimensional Extrapolator
 * Bow and arrow
 * Oliver Queen's Bow and Arrow
 * Book of Destiny
 * Boomerang
 * Quantum Flux Anchor
 * Bow and arrow
 * Oliver Queen's Bow and Arrow
 * Book of Destiny
 * Boomerang
 * Quantum Flux Anchor
 * Boomerang
 * Quantum Flux Anchor
 * Quantum Flux Anchor
 * Quantum Flux Anchor
 * Quantum Flux Anchor
 * Quantum Flux Anchor
 * Quantum Flux Anchor
 * Quantum Flux Anchor

Locations

 * Earth-1
 * Earth
 * United States of America
 * Star City
 * ARGUS headquarters
 * Gotham City
 * GCPD
 * Arkham Asylum
 * Wayne Enterprises
 * Batcave
 * Earth-38
 * Batcave
 * Earth-38

Trivia

 * The episode was previously titled "Hour Two".