Elseworlds, Part 1

Synopsis
When Barry Allen and Oliver Queen wake up one morning and realize they have swapped bodies with each other, the two set off to find out what disturbed the timeline to cause such a shift. However, things quickly go from bad to worse when they present their case to Team Flash and the gang doesn't believe them. Barry and Oliver realize they need Supergirl's help and travel to Smallville on Earth-38 where they end up meeting Kara's cousin, Clark Kent, and intrepid reporter, Lois Lane.

Main Characters

 * The Trinity
 * The Flash/Barry Allen (Oliver Queen)
 * Green Arrow/Oliver Queen (Barry Allen)
 * Supergirl/Kara Danvers (Kara Zor-El)
 * Team Flash
 * Iris West-Allen
 * The Flash/Barry Allen (Oliver Queen)
 * Killer Frost (Caitlin Snow)
 * Cisco Ramon
 * Elongated Man (Ralph Dibny)
 * Harrison Sherloque Wells
 * A.R.G.U.S.
 * Green Arrow/Oliver Queen (Barry Allen)
 * John Diggle
 * Superman/Clark Kent (Kal-El)
 * Lois Lane
 * Batwoman (Kate Kane)

Villains

 * The Monitor (Mar Novu)
 * Bertinelli Crime Family
 * Bratva
 * Bertinelli Crime Family
 * Bratva
 * Bratva

Other Characters

 * Earth-90 Vigilante Group
 * The Flash (Barry Allen)
 * Officer Jones
 * The Flash (Barry Allen)
 * Officer Jones
 * The Flash (Barry Allen)
 * Officer Jones
 * The Flash (Barry Allen)
 * Officer Jones
 * The Flash (Barry Allen)
 * Officer Jones
 * The Flash (Barry Allen)
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones
 * Officer Jones

Teams and Organization

 * Earth-90 Vigilante Group
 * S.T.A.R. Labs
 * CCPD
 * A.R.G.U.S.
 * Bertinelli Crime Family
 * Bratva
 * The Trinity
 * Bratva
 * The Trinity
 * The Trinity
 * The Trinity
 * The Trinity
 * The Trinity
 * The Trinity
 * The Trinity
 * The Trinity

Species

 * Humans (Earth-90)
 * Meta-Humans (Earth-90)
 * Maltusians (UE-9)
 * Humans (Earth-1)
 * Meta-Humans (Earth-1)
 * Robots (Earth-1)
 * Artificial Intelligence (Earth-1)
 * Humans (Earth-221)
 * Split Personalities (Earth-1)
 * Kryptonians (Earth-38)
 * Humans (Earth-38)
 * Dogs
 * Cats
 * Cats

Objects

 * "Stargirl Suit"
 * "Hawkgirl Suit"
 * "Huntress Suit"
 * "Hawkman Suit"
 * "Green Arrow Suit (Earth-90)"
 * "Captain Cold Suit"
 * "Firestorm Suit"
 * "The Ray Suit"
 * "Jesse Quick Suit"
 * "Obsidian Suit"
 * The Flash Suit (Earth-90)
 * Quantum Portals
 * Book of Destiny
 * The Monitor Armor
 * Flash Ring
 * The Flash Suit (Earth-1)
 * Guns
 * Bow and Arrow
 * Oliver Queen's Bow
 * Arrows
 * Green Arrow Suit (Earth-1)
 * Inter-Dimensional Extrapolator
 * Breaches
 * CFL Quark Matter
 * Clark Kent's Glasses
 * Kara Danvers' Glasses
 * Elongated Man Suit
 * Killer Frost Suit
 * Superman Suit
 * Supergirl Suit
 * Kal-El's Blanket
 * Green Arrow's Motorcycle
 * Superman Suit
 * Supergirl Suit
 * Kal-El's Blanket
 * Green Arrow's Motorcycle

Locations

 * Earth-90
 * Earth
 * USA
 * Central City
 * Earth-1
 * Earth
 * USA
 * Gotham City
 * Missouri
 * Central City
 * West-Allen Loft
 * S.T.A.R. Labs Central City Facility
 * Pipeline
 * Speed Lab
 * Washington
 * Star City
 * A.R.G.U.S. Headquarters
 * Bunker
 * Earth-38
 * Earth
 * USA
 * Kansas
 * Earth-38
 * Earth
 * USA
 * Kansas
 * Kansas

Trivia

 * The episode was previously titled "Elseworlds: Hour One".