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.