In Hindu mythology, the creature known for guarding gateways is Yama, the god of death. He oversees the transition between life and the afterlife, ensuring that souls cross over to their next phase. Often depicted with a yamun or noose, Yama embodies the balance between life and death, marking the importance of living a righteous life to secure a favorable afterlife. His role emphasizes respect for the cycle of existence, representing both a guardian and a guide in the journey beyond death.