Brunhild

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

Prince Gunnar
Nothing known about them other than the fact they loved each other and were a married couple. His death effected his wife to protect the kingdom alone.

Prince Sigurd
They both have a rivalry due to being from opposing kingdoms. Despite that, they willingly teamed together against Meliodas. They appear to have been on a romantic relationship in the past, but has deteriorated for still unknown reasons.

Trivia

 * Brunhild is named after the character of the same name from Germanic heroic legends.