Sunny Balwani

Sunny Balwani enters as Elizabeth Holmes's older confidant and eventual partner in Theranos, a man with money and business swagger who believes completely in her vision. He's controlling and intense, quick to dismiss doubters, and positions himself as the protector who will handle the world so she can focus on the dream.

Naveen Andrews plays him with a coiled, wounded arrogance that makes his devotion to Elizabeth feel both tender and unsettling from the start. The writing gives him certainty as armor, and Andrews lets small cracks show through the bluster, so you sense the control freak and the true believer are the same man.