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 Ray Park Guest Star Dawn Olivieri Guest Star David H. Lawrence XVII Guest Star Elisabeth Röhm Guest Star Deanne Bray Guest Star Todd Stashwick Guest Star Saemi Nakamura Guest Star Sasha Pieterse Guest Star Dawn-Lyen Gardner Guest Star Eidan Hanzei Guest Star Ai Yoshihara Guest Star Keisuke Hoashi Guest Star Adam Lazarre-White Guest Star Matt Sigloch Guest Star