Sapphire Rhodonite is a princess of the human world and a playable character in Disgaea 3: Absence of Justice. Since the Overlord always captures the princess, Sapphire entered the Evil Academy to learn the Overlord's weaknesses and launch a preemptive attack. Upon learning that Mao is the Overlord's son, she forces her way into the group, much to the joy of Almaz, who has a crush on her.
Sapphire is ruthless, powerful and cold-blooded, but has a weakness for anything cute and adorable. It is said that she lost the ability to cry long ago due to a traumatic event. Her power stems from years of watching countless heroes die in her name and she generally regrets sending "another innocent soul to the darkness" when she kills them.
She was released as DLC for the PSP re-release of Disgaea 2: Cursed Memories, known as Disgaea 2: Dark Hero Days.