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 David H. Lawrence XVII Guest Star Madeline Zima Guest Star Dawn Olivieri Guest Star Todd Stashwick Guest Star Elisabeth Röhm Guest Star Carlease Burke Guest Star Sasha Pieterse Guest Star Bryan Krasner Guest Star China Anderson Guest Star John Lee Ames Guest Star