Shura

From Disgaea Wiki

Real Name: Shura; Title: Demon General

The Masked Man is a powerful demon that was employed by Overlord Zenon. He was originally a demon from another Netherworld who came to Veldime, along with the Masked Woman, to escape the violence. In Veldime, the humans accepted them, even though they were demons. Touched by human kindness, they decided to stay and live out their days as a humans. However, with the arrival of Overlord Zenon, they decided to once again return to their demonic ways in order to defeat him. They were no match for him, but he spared their lives; instead, he sealed their wills and memories and made them serve him. After meeting with Adell and the others at the gate of Zenon's castle, they asked to be killed in order to atone for their many sins.

It is revealed after the battle that they were Adell's parents.