Success Is Assured

"Success is assured."

- "David Singh"

Synopsis
Barry considers a risky plan to save Iris from the Mirrorverse. Ralph attempts to stop Sue from making a grave mistake that could destroy her life.

Main/Featured Characters

 * Team Flash
 * The Flash (Barry Allen)
 * Iris West-Allen
 * Elongated Man (Ralph Dibny)
 * Cecile Horton
 * Frost (Caitlin Snow)
 * Harrison Nash Wells
 * Allegra Garcia
 * Joe West
 * Sue Dearbon
 * Joseph Carver
 * Team Citizen
 * Iris West-Allen
 * Kamilla Hwang

Villains

 * Eva McCulloch's Team
 * Eva McCulloch
 * David Singh
 * Dr. Light (Kimiyo Hoshi)
 * Sunshine (Millie Rawlins)
 * Ultraviolet (Esperanza Garcia)
 * Black Hole
 * Maurice
 * Black Hole
 * Maurice

Other Characters

 * Carla Tannhauser
 * Richard Dearbon
 * Penelope Dearbon

Organisations

 * S.T.A.R. Labs
 * McCulloch Technologies
 * Black Hole
 * Ralph Dibny, Private Investigator
 * Channel 52
 * Ralph Dibny, Private Investigator
 * Channel 52
 * Channel 52
 * Channel 52
 * Channel 52
 * Channel 52

Species

 * Humans
 * Meta-Humans
 * Reflections

Objects

 * Harrison Nash Wells' Gauntlet
 * Harrison Nash Wells' Techno Fanny Pack
 * Harrison Nash Wells' Grapple Hook
 * Smoke Bombs
 * Dr. Light Suit
 * Photon Blaster
 * Sunshine Suit
 * The Flash Suit
 * Elongated Man Suit
 * Ultraviolet Suit
 * Sue Dearbon's Suit
 * Frost Suit
 * The Flash Suit
 * Reflection Moderation Chamber
 * Speed Gauge
 * Reflection Moderation Chamber
 * Speed Gauge

Locations

 * Earth-Prime
 * Earth
 * USA
 * Missouri
 * Central City
 * S.T.A.R. Labs Central City Facility
 * CC Jitters
 * CCPD
 * McCulloch Technologies Headquarters
 * Caitlin Snow's Apartment
 * Bentley Building
 * Joseph Carver's house
 * Mirrorverse
 * Central City
 * S.T.A.R. Labs
 * Joseph Carver's house
 * Mirrorverse
 * Central City
 * S.T.A.R. Labs
 * Joseph Carver's house
 * Mirrorverse
 * Central City
 * S.T.A.R. Labs
 * Mirrorverse
 * Central City
 * S.T.A.R. Labs
 * Mirrorverse
 * Central City
 * S.T.A.R. Labs
 * S.T.A.R. Labs

Trivia

 * The title is a reference of Eva and his mirror children quote for their mission.
 * This is the first finale where the Main antagonist isn't defeated.
 * This is due to the COVID-19 pandemic that forced the season to finish earlier.