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 Nicholas D'Agosto Guest Star Shalim Ortiz Guest Star Zachary Quinto Sylar Guest Star Dania Ramirez Maya Herrera Guest Star Katie Carr Guest Star David Anders Guest Star Eriko Tamura Guest Star Dana Davis Guest Star James Kyson Ando Masahashi Guest Star Jimmy Jean-Louis Guest Star Adair Tishler Guest Star Stephen Tobolowsky Guest Star Cary-Hiroyuki Tagawa Guest Star Elya Baskin Guest Star Dianna Agron Guest Star Janel Parrish Guest Star Kurando Mitsutake Guest Star