Aboru

is an original character made for The Seven Deadly Sins: Grand Cross mobile game.

History
Jericho and Gilthunder were sent on a mission to deal with a Demon of whom Bartra had a vision about. Aboru introduces himself to them as Galand's nephew. After discovering his uncle was killed by Escanor, he began to attack them. However, Aboru is presumably defeated by them.

Galand
Not much is known about their relationship. However, Aboru was furious when Jericho and Gilthunder said he was killed by Escanor, implying he really cared about his uncle.