Carlo was the cousin of the Grandmaster, who publicly executed him for committing high treason.
Guilty of having interfered with the Grandmaster's power, Carlo tried to escape from Sakaar but was found and captured by the Sakaaran Guards. He was brought before his cousin in his palace, where Carlo desperately begged for forgiveness. The Grandmaster, who was introducing his newest slave gladiator, Thor to his new life, solemnly announced that he would pardon him. He then executed him with the Melt Stick, stating he was pardoning him "from life." In his last moments, Carlo screamed and called to Thor for help, before melting in a puddle of organic matter, much to the latter's disgust and horror.
- Carlo's name is a reference to comic book artist Carlo Pagulayan. Pagulayan worked on the Planet Hulk, one of the comic book storyline that served as an inspiration for Thor: Ragnarok.
- According to a deleted scene, Carlo was killed by Grandmaster due to gambling away a two humped camel.