Indirra is Sage's mother and a recurring character in the Star Darlings books. She is a former student of Starling Academy, having gone there the same time as Lady Stella and Rancora. During her time there, she won third place in the Wish-Science Fair.
Sometime later in her life, she became one of Starland's leading scientists and met her husband Leonard. Eventually, she gave birth to Sage, Archer, and Helio. According to Gemma and the Ultimate Standoff, she looks like an older version of Sage.