Lex

“Yeah... Well, I'd be lyin' if I said I didn't feel nothin'. But I tell you, it serves [him]() right. He killed a lot of innocent people.” — Lex, on his father's death

Lex (Japanese: レックス Lex) was the son of Duke Lombard of Grannvale's House Dozel. He was persuaded by his friend, Azelle of Velthomer, to come to the assistance of Sigurd) of Chalphy in opposing the Verdane invasion of Grannvale, and in spite of his father's intense hatred for House Chalphy, he served with Sigurd in Agustria, Silesse and beyond until his presumed death in the Battle of Belhalla.

(Source: Fire Emblem Wiki)