Zechs Merquise /
Milliardo Peacecraft
Zechs Merquise is the son of King Peacecraft of the Sank Kingdom and is also the brother of Relena Darlian/Peacecraft. He wore a mask to conceal his identity while in the OZ organizaiton. He has given up the right to rule the Sank Kingdom because of too much blood on his hands due to his actions. He regards Heero as a worthy adversary and at one point rebuilds the destroyed Wing Gundam so that they may again battle one day.