Jack Coleman Mr. Bennet, HRG Actor Greg Grunberg Matt Parkman Actor Robert Knepper Samuel Sullivan Actor Ali Larter Tracy Strauss, Niki Sanders, Jessica Actor James Kyson Ando Masahashi Actor Masi Oka Hiro Makamura Actor Hayden Panettiere Claire Bennett Actor Adrian Pasdar Nathan Petrelli Actor Zachary Quinto Sylar Actor Sendhil Ramamurthy Mohinder Suresh Actor Cristine Rose Angela Petrelli Actor Milo Ventimiglia Peter Petrelli Actor Madeline Zima Guest Star Dawn Olivieri Guest Star Deanne Bray Guest Star Tessa Thompson Guest Star Ernie Hudson Guest Star Ray Park Guest Star Louise Fletcher Guest Star Rachel Melvin Guest Star Jack Wallace Guest Star Christine Adams Guest Star Sydney Sweeney Guest Star Kat Purgal Guest Star Carrie Wiita Guest Star