'Heroes' Season 3 Cast - Ali Larter as Niki Sanders

Is Niki gone for good? Who is Tracy Strauss? Ali Larter stars as Niki Sanders/Tracy Strauss/Jessica in season three of NBC's hit drama Heroes.

More About Heroes

• Synopsis and Other Essential Information
• Spoilers/Episode Guide

Cast Biographies

• Adrian Pasdar
• Ali Larter
• Greg Grunberg
• Hayden Panettiere
• Masi Oka
• Milo Ventimiglia
• Noah Gray-Cabey