Jvarasura
Jvara, also called Jvarasura, is the personification of fever in Hindu tradition. He is the servant, and sometimes the attendant, of the pox-goddess, Shitala.
Hinduism
When Shiva was not invited to Daksha's yajna, his wife, Sati, was swept by sorrow. Observing the unease of his wife, Shiva's third eye issued a drop of sweat, and a fearful creature emerged out of the sweat, gleaming like a flame. The creature was dwarfish, with penetrating eyes, donning a green moustache, with hair standing erect on his head and body, looking like hybrid of a hawk and an owl, jet-black in hue, and was dressed in a blood-coloured cloth. He named the creature Jvara, and the creature proceeded to cause a fever to all the devas.Once, Vishnu was inflicted with the fever of Jvarasura, when in the form of Hayagriva. He then killed the fever-demon by cutting him into three pieces using his discus, the Sudarshana Chakra. However, Jvarasura was later revived by Brahma, who joined the three parts. But, by that time, each three parts had grown a head and a limb. Thus, Jvarasura is depicted as having three faces, three feet, and remarkable ability to move in all directions at once. He was later selected as servant of the pox-goddess, Shitala.