Memorabilia

Synopsis
When Sherloque wants to use a memory machine on Barry and Nora to help gain access to Grace's memories, Nora panics, fearing her parents will find out the secrets she's been keeping from them. Nora secretly decides to use the machine on her own, which ends in disaster after she gets trapped inside Grace's mind. Barry and Iris go in after their daughter and Iris is brokenhearted by what she finds. Meanwhile, Ralph tricks Cisco into going out for a night out on the town.

Main Characters

 * Team Flash
 * Nora West-Allen
 * Barry Allen
 * Iris West-Allen
 * Ralph Dibny
 * Caitlin Snow
 * Harrison Sherloque Wells
 * Kamilla Hwang

Villains

 * Eobard Thawne
 * Cicada (Orlin Dwyer)
 * Grace Gibbons
 * The Mad Hatter (Jervis Tetch)
 * The Thinker (Clifford DeVoe)

In Grace Gibbons's mind

 * Gridlock
 * Cicada (Orlin Dwyer)
 * Cicada (Grace Gibbons)

In Nora West-Allen's mind

 * Zoom
 * Red Death
 * Amunet Black
 * The Thinker
 * The Trickster
 * Savitar
 * Cicada
 * Reverse-Flash

Other Characters

 * Gideon
 * Debbie Dibny
 * Larry Blumenthal
 * Watsune
 * John Watson
 * Harrison Sherloque Wells' Fourth Ex-Wife
 * John Woo
 * John Hughes
 * John Ford
 * John Waters
 * Truck
 * Doug
 * Kamilla Hwang's Sister

In Grace Gibbons's mind

 * Mr. Gibbons
 * Mrs. Gibbons
 * David Singh
 * Jones
 * Vickie Bolen

In Nora West-Allen's mind

 * Mr. Gibbons
 * Mrs. Gibbons
 * David Singh
 * Jones
 * Joe West
 * Dexter Myles
 * Iris West-Allen
 * Vanessa Ambres
 * Vickie Bolen

Teams and Organizations

 * S.T.A.R. Labs
 * Bannin Family Ice
 * Team Flash
 * CCPD
 * Ralph Dibny, Private Investigator
 * Iris's Blog
 * Central City Citizen
 * Summerholt Institution
 * Tannhauser Industries
 * Forerunner Multiversal Delivery Service
 * Central City Hospital
 * The Central City Gazette
 * The Central City Chronicle
 * CC Squirrels
 * Liquid Kitty
 * Sickada
 * Central City Fair
 * Lyft

In Grace Gibbons's mind

 * CCPD
 * Central City Hospital
 * Channel 52

In Nora West-Allen's mind

 * CCPD
 * S.T.A.R. Labs
 * Flash Museum
 * Central City Citizen
 * DC Comics

Species

 * Metahumans
 * Humans
 * A.I.
 * Humans (Earth-221)
 * Rabbit

Objects

 * Memory Machine (La Machine à Mémoire)
 * The Flash Suit
 * Metahuman Cure
 * Gauntlet
 * M.A.D. 2.0
 * Dark Matter
 * Time Language
 * The Book of Ralph

In Grace Gibbons's mind

 * Breaches
 * CFL Quark Matter
 * Cicada Suit
 * Cicada Mask
 * S.T.A.R. Labs Satellite
 * Lightning Dagger
 * Gridlock Mask

In Nora West-Allen's mind

 * The Flash Suit
 * Flash Phones
 * Flash Ring
 * Hall of Villains display
 * Zoom Suit
 * Savitar Armor
 * Amunet Black Suit
 * Hoverchair
 * The Trickster Suit
 * Reverse-Flash Suit
 * Cicada Suit
 * Cicada Mask
 * Magnetar

Locations

 * Earth-1
 * Earth
 * United States of America
 * Missouri
 * Central City
 * S.T.A.R. Labs Central City Facility
 * Time Vault
 * West-Allen Loft
 * Bannin Family Ice
 * Unnamed Building
 * Ralph Dibny, Private Investigator
 * Central City Citizen
 * Central City Hospital
 * Keystone City
 * Tannhauser Offsite
 * Earth-221
 * Earth
 * Summerholt Institution
 * Montreal
 * Grace Gibbons's mind
 * Earth-1
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Central City Police Precinct
 * 4th and Waid
 * Central City Fair
 * Central City Hospital
 * Nora West-Allen's mind
 * Earth-1
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Central City Police Precinct
 * S.T.A.R. Labs
 * Flash Museum
 * Hell

Trivia

 * It was mentioned that Earth-221 does not have any zambonis.