The Four Guardian Kings are the protectors of the four cardinal directions and are almost always found at the entrance to monasteries and temples. Yellow Vaisravana (Tib. Namthose, also known as Jambhala) is the guardian of the north, and holds a victory banner in his right hand and a mongoose in his left hand. Blue Virudhaka is the guardian of the south and holds a sword. Red Virupaksa is the guardian of the west and holds a stupa in his left hand and a serpent in his right. White Dhrtarastra is the guardian of the east and holds a stringed musical instrument.