YamaYama: The demon Gatekeeper of Del Huoy, the opening to the gates of Chinese Hell. Yama is a knighted soldier on horseback, with glowing green eyes. He seeks to capture souls, absorbing them by impaling them on his lance, and does not care whether the souls are good or bad.
Yama appears on Earth after someone dies, and has a window of opportunity to capture their soul before their body is properly buried. Though Yama is a spirit Witches are sometimes able to see him.

Yen Lo: Skilled in the martial arts, and taught in the spiritual ways of a Zen Master, Yen Lo was a dangerous opponent. His weapon of choice was a katana blade, and his Zen learning’s lent him enhanced strength and reflexes, as well as the ability to travel between the mortal realm and that of Limbo through pools of water and to look upon the mortal dimension by using water surfaces as scrying glasses.
After battling An Ling, the Zen Master and The Charmed Ones Yen Lo’s soul was forced into reincarnation while trapped in the Dragon Blade.

Yen Lo