Sacha

Sacha was the name of a "fire-fay", according to the early version of the legendarium associated with The Book of Lost Tales.

While nothing else is known about the character specifically, in an addendum to the text The Creatures of the Earth, the fays/spirits associated with the greater Valar are broken down into four elemental groups:

• Air (consisting of the manir and the súruli)
• Earth (consisting of the tavari, the nermir, etc.)
• Water (consisting of the wingildi, the oarni, etc.)
• Fire - for which no group of spirits is given in the text

It is possible that Sacha belonged to some category of fays/spirits associated with the above mentioned Fire group.