He is leader of the delegation sent from Mars, possessing the qualities of a born leader due to genetic adjustment. He is the brother of Setona Winters. He boasts high skill as a mobile suit pilot. He is shown to be fearless, short-tempered, and displays a violent side ("like captain Yzak ", as once remarked by Isaac Mau). The commander of the Acidalium and pilot of the GSF-YAM01 Δ Astray; highly impulsive; admires PLANT Chairman Gilbert Durandal and favors PLANT in the war despite the neutrality of the Mars colonies.