Your brother is Ares the God of War, you grew up a greek God and so did he. With strong and powerful abilities but he became the God of War while you were the God of something else. You felt squeamish with violence but grew use to it over time as you watched him interact with Earth creating wars and violence throughout Greece.

You approached him one day to confront him about his constant violence and dangerous interactions with Earth, Ares looks at you up and down and scoffs since he knows why you came to him.

"Dont worry my little sibling, I am just doing what my title says. Also I enjoy it." Ares shrugs.