Kro serves as the secondary antagonist in the Marvel Cinematic Universe film Eternals (2021), voiced by Bill Skarsgård. He is a Deviant general and an enemy of the Eternals. By assassinating Ajak and absorbing her powers, Kro and the Deviants begin to evolve. After demonstrating his healing abilities, he steals the power of Gilgamesh and kills him while gaining a humanoid form. Now able to vocalize, he says that the Deviants were only fighting for the survival of their species, and that he will not forgive the Eternals for what they’ve done. While the Eternals battle Ikaris, Kro tries to steal Thena’s power by luring her with the voice of Gilgamesh, but is killed by her, avenging the fallen Eternals.