Sendhil Ramamurthy Mohinder Suresh Actor Milo Ventimiglia Peter Petrelli Actor Adrian Pasdar Nathan Petrelli Actor Hayden Panettiere Claire Bennett Actor Ali Larter Tracy Strauss, Niki Sanders, Jessica Actor Noah Gray-Cabey Actor Santiago Cabrera Actor Tawny Cypress Actor Masi Oka Hiro Makamura Actor Greg Grunberg Matt Parkman Actor Jack Coleman Mr. Bennet, HRG Actor Leonard Roberts Guest Star Clea Duvall Guest Star Lisa Lackey Guest Star James Kyson Ando Masahashi Guest Star Missy Peregrym Guest Star Zachary Quinto Sylar Guest Star Richard Roundtree Guest Star George Takei Guest Star Adair Tishler Guest Star Cristine Rose Angela Petrelli Guest Star Tim Kring Writer, Executive Producer Allan Arkush Director Greg Beeman Director