Meet Korea's John Wick: The many lives of So Ji-sub from 'Agent Kim Reactivated'

South Korea has its own John Wick now, and his name is So Ji-sub.

Channeling a lethal, grieving man determined to save his daughter and exact revenge, the 48-year-old actor has emerged as a global sensation with "Agent Kim Reactivated," winning over audiences with his mix of paternal intensity and rugged appeal.

But who is the man behind Kim, the relentless former operative at the heart of the hit?

The name So Ji-sub may be new to viewers who only recently started streaming Korean shows, but So ...