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 Dawn Olivieri Guest Star Ashley Crow Guest Star Jimmy Jean-Louis Guest Star Madeline Zima Guest Star Ray Park Guest Star Harry Perry Guest Star Elizabeth Rohm Guest Star Andrew Connolly Guest Star Hank Stratton Guest Star Sasha Pieterse Guest Star Dusty Sorg Guest Star