Meg is one of the four Poe Sisters in Ocarina of Time and Majora's Mask.
Ocarina of Time
Meg - one of the Poe sisters
After slaying the other three Poe Sisters in the Forest Temple, Meg will appear as Link approaches the central elevator. She will create copies of herself; Link must avoid the illusions and hit Meg with the Bow to deal damage. The true Meg can be identified as she performs a small twirl as soon as all of the copies appear. After she is defeated, the purple center flame will light and Link is allowed to proceed.
It's Meg, eldest of the ghost
Link is thrust into a battle against the four Poe Sisters in the Spirit House in Majora's Mask. Meg utilizes the same attack pattern as in Ocarina of Time. Once the four Poe Sisters are defeated, Link is awarded a Piece of Heart.