Karl Fei-Ong

Karl Fei-Ong is one of villains of Blood+ is mentally disturbed man who obessed with Saya and he was one of Diva's chevalier

About
Born and raised in Vietnam, Karl was recurred by Amshel as guinea pig who introduced Diva who made him as chevalier. because of his traumatic childhood and heavily modified by Amshel's experiments resulting loss of his sanity and  mentally unbalanced when Saya cut his arm during Vietnam War in 1972 it made him for his revenge but he was only cared by person was Solomon Goldsmith