Cast of Kingdom

Frank Grillo plays Alvey Kulina, the tough and determined owner of the Navy Street gym, where he trains MMA fighters.

Jonathan Tucker portrays Jay Kulina, Alvey's eldest son, a talented yet troubled fighter seeking his father's approval.

Nick Jonas is Nate Kulina, Alvey's younger son, who is a rising star in the world of MMA while dealing with personal challenges.

Matt Lauria takes on the role of Ryan Wheeler, a former champion and ex-convict striving for redemption and a comeback in the ring.

Kiele Sanchez plays Lisa Prince, Alvey's girlfriend and savvy business partner, who helps run the gym.

Natalie Martinez is Alicia Mendez, a fierce female fighter with aspirations of making it big in the MMA scene.

Joanna Going plays Christina Kulina, Alvey's estranged wife, who struggles with addiction and her complex family relationships.