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 Clea Duvall Guest Star Jack Coleman Mr. Bennet, HRG Guest Star Leonard Roberts Guest Star Ashley Crow Guest Star Thomas Dekker Guest Star Jimmy Jean-Louis Guest Star James Kyson Ando Masahashi Guest Star Nora Zehetner Guest Star Zachary Quinto Sylar Guest Star Conroe Brooks Guest Star Randall Bentley Guest Star