The heir of the Zalmfort family, the second-most influential family after the Seven Stars. Zadiel is the son of Sylt Zalmfort and possesses a strong sense of justice and sincere personality. As a result of an accident involving a shuttle his younger sister Mina was on, he became suspicious of his father and took off in the Gundam Dantalion. He later calls himself the mercenary Zaza Fossil, independently tracks down his missing sister, and learns the truth behind the shuttle accident from her.