What is the name of the 3 headed dog who guards the gates of Hades Herakles had to capture him?

The three-headed dog that guards the gates of Hades is named Cerberus. In Greek mythology, Herakles (Hercules in Roman mythology) was tasked with capturing Cerberus as one of his Twelve Labors. This formidable creature prevented the dead from leaving the underworld and was known for its fierce demeanor. Herakles successfully brought Cerberus to the surface, showcasing his strength and bravery.