Mohinder Suresh
Sendhil Ramamurthy
Isaac Mendez
Santiago Cabrera
Peter Petrelli
Milo Ventimiglia
Simone Deveaux
Tawny Cypress
Hiro Makamura
Masi Oka
Claire Bennett
Hayden Panettiere
Matt Parkman
Greg Grunberg
Nathan Petrelli
Adrian Pasdar
Tracy Strauss/Niki Sanders/Jessica
Ali Larter
Micah Sanders
Noah Gray-Cabey
Noah 'H.R.G. (Horn-Rimmed Glasses)' Bennet
Jack Coleman
Ando Masahashi
James Kyson
Angela Petrelli
Cristine Rose
Audrey Hanson
Clea Duvall
Gabriel "Sylar" Gray
Zachary Quinto
Eden McCain
Nora Zehetner
Guest Star
Erick Avari
Brody Mitchum
Matt Lanter
Sandra Bennet
Ashley Crow
Guest Star
Christopher Eccleston
D.L. Hawkins
Leonard Roberts
Daniel Linderman
Malcolm McDowell
Guest Star
Kristin Veitch
Heidi Petrelli
Rena Sofer
Guest Star
Thomas Dekker
Guest Star
Stacy Haiduk
Guest Star
Eric Roberts
Guest Star
Shishir Kurup
Guest Star
Stana Katic
Charlene "Charlie" Andrews
Jayma Mays
Guest Star
Tina Lifford
Kimiko Nakamura
Saemi Nakamura
Molly Walker
Adair Tishler
Guest Star
Aron Malsky
Guest Star
Graham Beckel
The Haitian
Jimmy Jean-Louis
Candice Wilmer
Missy Peregrym
Maya Herrera
Dania Ramirez
Guest Star
Ellen Greene
Campaign Manager
Eugene Byrd
Guest Star
Missi Pyle
Guest Star
Karri Turner
Guest Star
Kellan Lutz
Jackie Wilcox
Danielle Savre
Guest Star
Kavi Ladnier
Guest Star
Colby French
Janice Parkman
Lisa Lackey
Guest Star
Sterling Beaumon
Simon Petrelli
Justin Evans
Charles Deveaux
Richard Roundtree
Meredith Gordon
Jessalyn Gilsig
Guest Star
Paula Newsome
Guest Star
Sakina Jaffrey
Kaito Nakamura
George Takei
Guest Star
Keith Burke
Guest Star
Ian Gomez
Guest Star
Conroe Brooks
Lyle Bennet
Randall Bentley
Guest Star
Garrett Masuda
Ted Sprague
Matthew John Armstrong
Daphne Millbrook
Brea Grant
Guest Star
Rusty Schwimmer
Guest Star
Stan Lee
Monty Petrelli
Jackson Wurth
Guest Star
Bill Fagerbakke
Guest Star
Ethan Cohn
Samuel Sullivan
Robert Knepper
Guest Star
Christina Haag
Guest Star
John Lacy
Elle Bishop
Kristen Bell
Guest Star
Lilas Lane
Guest Star
Paul Perri
Adam Monroe
David Anders
Guest Star
Jeremy Gram Weaver
Emile Danko
Zeljko Ivanek
Lydia
Dawn Olivieri
Bob Bishop
Stephen Tobolowsky
Gretchen Berg
Madeline Zima
Usutu
Ntare Guma Mbaho Mwine
Lauren Gilmore
Elisabeth Röhm
Benjamin "Knox" Washington
Jamie Hector
Edgar
Ray Park
Eric Doyle
David H. Lawrence XVII
Monica Dawson
Dana Davis
Emma Coolidge
Deanne Bray
West Rosen
Nicholas D'Agosto
Flint Gordon
Blake Shields
Arthur Petrelli
Robert Forster
Alejandro Herrera
Shalim Ortiz
Yaeko
Eriko Tamura
Eli
Todd Stashwick
Caitlin
Katie Carr
Amanda Strazzulla
Sasha Pieterse
Hesam
Assaf Cohen
Tina
Deirdre Quinn
Maury Parkman
Alan Blumenfeld
Chris
Daryl Crittenden
Nana Dawson
Nichelle Nichols
Ricky
Holt McCallany
Will
Dominic Keating
Tuko
Adetokumboh M'Cormack
Waitress Lynette
Sally Champlin
Little Sylar
Joshua Rush
Shadow Agent / National Guard Soldier / SWAT Agent
Julio Leal
Baby Matt Parkman / Baby Matt Parkman 1 / Baby Matt Parkma
Reed Baron
Baby Matt Parkman / Baby Matt Parkman 2
Quin Baron
Ezekiel
Robb Conner
Detective Bryan Fuller
Barry Shabaka Henley
May
Janel Parrish
Mike
Rick Worthy
Debbie Marshall
Dianna Agron
Analyst
Jonny Siew
Hunter / Agent / U.S. Marine
Jason Giffin
Damian
Harry Perry