Who is cerberus rivals?

Answer 1

In Greek mythology, Cerberus is the three-headed dog that guards the entrance to the underworld. Cerberus's main rival is typically considered to be Heracles (Hercules), who was tasked with capturing Cerberus as one of his twelve labors. Other rivals or adversaries of Cerberus could include gods or heroes who attempted to enter or exit the underworld without permission, as Cerberus's role was to prevent such intrusions.