As Akira is on his way to Lucifers castle he is confronted by Grevir. Who has heard from Forlo about a powerful Demikid. Finding him cute, she fights him to see if he's as strong as Forlo said. After her defeat she is impressed by Akira's power and states he might be as strong as Lucifer himself before she dies.
In Light Version she is revealed to be working alongside Forlo and plotting to overthrow her Lord Lucifer. When Jin speaks with her she mentions that he's too young for her tastes.