Dolph Lundgren Joins 'Aquaman' as New Villain!

Dolph Lundgren is heading underwater to join the cast of Aquaman!

The 59-year-old actor will be joining the cast – which includes Jason Momoa and Amber Heard – of the new DC superhero film in a villainous new role, THR reports.

PHOTOS: Check out the latest pics of Dolph Lundgren

Dolph will be playing King Nereus of the aquatic kingdom of Xebel, who claims Mera (Amber) as his own and wants to kill Aquaman (Jason).

Other stars set to star in the upcoming film include Patrick Wilson, Nicole Kidman, and Yahya Abdul-Mateen II.

Aquaman is set to hit theaters in 2018.