Professor Stein/Half of Firestorm

Victor Garber

Ray Palmer/Atom

Brandon Routh

Sara Lance / White Canary

Caity Lotz

Mick Rory/Heat Wave

Dominic Purcell

Rip Hunter

Arthur Darvill

Gideon (voice) / Gideon / Evil Gideon

Amy Louise Pemberton

Dr. Nate Heywood/Citizen Steel

Nick Zano

Kendra Saunders

Ciara Renee

Zari Tarazi / Zari Tomaz

Tala Ashe

Jefferson "Jax" Jackson/Half of Firestorm

Franz Drameh

Amaya Jiwe/Vixen

Maisie Richardson-Sellers

Ava Sharpe

Jes Macallan

John Constantine / Dr. Gwyn Davies

Matt Ryan

Damien Darhk

Neal McDonough

Esperanza 'Spooner' Cruz

Lisseth Chavez

Gary Green

Adam Tsekhman

Elvis Presley/Jesse Presley

Luke Bilyk

Wally West/Kid Flash

Keiynan Lonsdale

Astra Logue

Olivia Swann

Young Ray Palmer

Jack Fisher

Leo Snart/Citizen Cold

Wentworth Miller

Dick Rory

Evan Jones

Oliver Queen/Green Arrow

Stephen Amell

Helen of Troy

Bar Paly

Uncle Lucious

Geoffrey Blake

P.T. Barnum

Billy Zane

John Diggle

David Ramsey

Nora Darhk

Courtney Ford

Lily Stein

Christina Brucato

Mrs. Palmer

Susie Abromeit

Curtis Holt

Echo Kellum

Felicity Smoak

Emily Bett Rickards

Anh Ly

Dianne Doan

Young Martin Stein

Graeme McComb

Dominator Queen

Cissy Jones

Hedy Lamarr

Celia Massingham

Lyndon B. Johnson

Peter Hall

Gorilla Grodd

David Sobolov

Amaya's ancestor

Joy Richardson

Kuasa

Tracy Ifeachor

Dr. Harry Wells/Eobard Thawne/Reverse-Flash

Tom Cavanagh

Isaac Newton

Lawrence Green

Anne Queen

Cecilia Deacon

Behrad Tarazi

Shayan Sobhian

Arnold Coleson

Samuel Vincent

Alex Danvers

Chyler Leigh

Chuck McCabe

Eli Gabay

Dr. Bernhard Vogal

Adrian Hough

Mallus

John Noble

Esi Jiwe

Erica Tazel

Gumball

Marc Graue

King Arthur

Nils Hognestad

Emily

Madeleine Arthur

Jesse Wells

Violett Beane

Barry Obama

Lovell Adams-Gray

Young Dr. Moore

Annabel Marshall-Roth

Julius Caesar

Simon Merrells

Leif Erikson

Thor Knai

Iris West

Candice Patton

Henry Heywood

Matthew MacCaull

Eddie Rothberg

Todd Thomson

Young Kuasa

Nakai Takawira

Cecil B. DeMille

Andy Thompson

Jonah Hex

Johnathon Schaech

Caitlin Snow/Killer Frost

Danielle Panabaker

Cisco Ramon/Vibe

Carlos Valdes

Blackbeard

Jonathan Cake

Director Bennett

Hiro Kanagawa

Mona Wu

Ramona Young

Rene Ramirez/Wild Dog

Rick Gonzalez

Freydis Eriksdottir

Katia Winter

Manager

Guy Christie

Dinah Drake/Black Canary

Juliana Harkavy

Eobard Thawne / Reverse-Flash

Matt Letscher

Alan

Chris Carson

Beebo

Ben Diskin

Kara Danvers/Supergirl/Overgirl

Melissa Benoist

Bishop / Younger Bishop / Bishop Clone

Raffi Barsoumian

Barry Allen/The Flash

Grant Gustin

Nerdy Cadet

Tyson Arner

Ray Terrill/The Ray

Russell Tovey

Henry 'Hank' Heywood

Thomas F. Wilson

Cadet #1

Ruby Gillett

Carter Hall / Hawkman / Joe Boardman

Falk Hentschel

Clarissa Stein

Isabella Hofmann

Lita

Mina Sundwall

Desmond / Neron

Christian Keyes

Wolfie

Sisa Grey

Lachesis

Sarah Strange

Malcolm Merlyn

John Barrowman

Chronos (voice)

Steve Blum

Kayla

Aliyah O'Brien

Atropos

Joanna Vanderham

Dybbuk (voice)

Paul Reubens

Fairy Godmother

Jane Carr

J. Edgar Hoover Bot / J. Edgar Hoover

Giacomo Baessato