Who / What is this (Buddhism)?

I am reading a book on Tibetan Buddhism, and it mentions Shinje. Who is this?

Shinje is the Tibetan Name for Yama, the Lord of Death. He is the one who moves Samsara, the process of rebirth.

Dorje hit the "nail on the head".

_()_

Ohm Mani pad me hum.

Another name for Yama.