Sang'gre Lira of Lireo, Rehav of Sapiro, is the daughter of Hara Amihan of Lireo, and Rama Ybrahim of Sapiro. Switched in infancy with her cousin Mira, she grew up in the human world.

She is designated by Emre, the supreme deity of Encantadia, as a Luntaie - the instrument to unify the estranged daughters of Queen Minea and restore peace in Encantadia as seen by Cassiopea and Ades.

For a long time, it was thought that Lira, as Amihan's only daughter, would be the heiress to the throne. However, Amihan designated as her successor to the throne her younger sister Danaya in her last will, bypassing her own daughter, because it was perceived that she was then unprepared for the role. Upon the accession of her father, Ybrahim, as King of New Sapiro, she became heiress presumptive, as her father's only child. Lira was promoted as a full-fledged Sang'gre after being trained by Cassiopea.

According to Mira, "Lira" is a type of gem. She is Mira's best friend and closest confidante. Due to their closeness, they consider themselves as partners-in-crime. She was chosen by the Earth Gem to become its new master, as the successor of Hara Danaya.

Lira becomes the mother of Diwani Cassandra of Lireo, Rehav of Sapiro, who came from a lock of her hair.

Lira appears in Mulawin vs. Ravena as a guest character, along with Hara Pirena of Hathoria.