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 Jimmy Jean-Louis Guest Star Madeline Zima Guest Star Deanne Bray Guest Star Dawn Olivieri Guest Star Tessa Thompson Guest Star Kat Purgal Guest Star Carlease Burke Guest Star Danica Stewart Guest Star Candice Patton Guest Star Sally Champlin Guest Star Assaf Cohen Guest Star Cindy Chiu Guest Star