Flash Back

"Sometimes the only way to move forward is to revisit the things in your past that were holding you back. You have to deal with them head on, no matter how scary they may be. Because once we do, you'll see that you can go further than you ever imagined."

- Barry Allen

Synopsis
After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his speed, Barry decides to travel back in time and masquerade as his earlier self in order to get his nemesis, Dr. Harrison Wells/Eobard Thawne, to teach him how to run faster. However, things don't go as planned and Barry is stunned to face familiar foe Hartley Rathaway, old friend Eddie Thawne, as well as the real danger of time travel. Iris makes peace with her past in order to embrace her future.

Protagonists

 * Team Flash
 * The Flash (Barry Allen)
 * Harrison Wells (Eobard Thawne)
 * Cisco Ramon
 * Caitlin Snow
 * Iris West
 * Joe West
 * Harry Wells
 * Eddie Thawne
 * Wally West
 * Pied Piper (Hartley Rathaway)

Villains

 * Harrison Wells (Eobard Thawne)
 * Zoom
 * Pied Piper (Hartley Rathaway)
 * Mick Rory
 * Tony Woodward
 * James Jesse
 * Shawna Baez
 * Kyle Nimbus
 * Wade Eiling
 * Danton Black
 * Clyde Mardon
 * Farooq Gibran
 * Clay Parker
 * Grodd

Other Characters

 * Jay Garrick
 * Harrison Wells
 * Scott Evans
 * Enzo Ferrari
 * Ferdinand Porsche
 * Jesse Wells
 * Barry Allen (Earth-2)
 * Nora Allen
 * Fred Chyre
 * Henry Allen
 * Ronnie Raymond
 * Martin Stein
 * Mason Bridge
 * Rick Astley
 * Harry Potter
 * Inky
 * David Singh
 * Osgood Rathaway
 * Rachel Rathaway
 * God

Teams and Organizations

 * S.T.A.R. Labs
 * Team Flash
 * Central City Picture News
 * Iron Heights Penitentiary
 * Rathaway Industries
 * Central City Police Department
 * Miliken Standard Corporation

Events

 * Metahuman Invasion
 * Mayhem on the Cleveland Dam
 * The Singularity
 * Battle in the Pipeline
 * Capture of Pied Piper
 * S.T.A.R. Labs Particle Accelerator Explosion
 * Chase of The Flash

Species

 * Humans
 * Metahumans
 * Metahumans (Earth-2)
 * Humans (Earth-2)
 * Time Wraiths
 * Dementors

Objects

 * The Flash Suit
 * Jay Garrick's Helmet
 * Vibes
 * Zoom Suit
 * Speed Equation
 * Reverse-Flash Suit
 * Velocity 9
 * Oscars
 * Breaches
 * 12 Monkeys
 * Temporal Wormholes
 * Sonic Gauntlets
 * Pied Piper Suit
 * Evil Hearing Aids
 * Eobard Thawne's Wheelchair
 * Time Aberrations
 * Power Dampeners
 * Mission Impossible
 * S.T.A.R. Labs Satellite
 * Power-Dampening Cuffs
 * Never Gonna Give You Up
 * Holograms
 * Wrath of Khan
 * The Frightening
 * Tachyon Prototype

Locations

 * Earth-1
 * Earth
 * North America
 * United States of America
 * Missouri
 * Central City
 * University Town
 * S.T.A.R. Labs Central City Facility
 * Pipeline
 * Time Vault
 * West House
 * Eobard Thawne's House
 * Central City Airport
 * Rathaway Industries Building
 * City Center
 * Central City Police Precinct
 * City Hall
 * Courthouse
 * Leawood
 * Lawrence Hills
 * Chubbuck
 * Westminister
 * Windsor Heights
 * Petersburg
 * Mounds View
 * New Brighton
 * Danville
 * Englewood
 * Gardener River
 * Western Avenue Bridge
 * Central City Park
 * Central Station Mall
 * Van Gelo Opera House
 * Keystone City
 * Iron Heights Penitentiary
 * Cleveland Dam
 * Earth-2
 * Speed Force
 * Hell