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 Micah Sanders Actor Santiago Cabrera Isaac Mendez Actor Tawny Cypress Simone Deveaux Actor Masi Oka Hiro Makamura Actor Greg Grunberg Matt Parkman Actor Clea Duvall Guest Star Nora Zehetner Guest Star Cristine Rose Angela Petrelli Guest Star Stacy Haiduk Guest Star James Kyson Ando Masahashi Guest Star