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 Ashley Crow Guest Star Madeline Zima Guest Star Jimmy Jean-Louis Guest Star Lisa Lackey Guest Star Ray Park Guest Star Dawn Olivieri Guest Star Rachel Melvin Guest Star Rick Worthy Guest Star Assaf Cohen Guest Star Wes Ramsey Guest Star Greg Zola Guest Star Saemi Nakamura Guest Star Željko Ivanek Guest Star