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 Bruce Boxleitner Guest Star Swoosie Kurtz Guest Star Ashley Crow Guest Star Saemi Nakamura Guest Star Dawn Olivieri Guest Star Akihiro Kitamura Guest Star Jayson Blair Guest Star Jamie Tisdale Guest Star David Atkinson Guest Star Sam Cohen Guest Star