キラ・ヤマト
is originally part of Rau Le Creuset's team and part of the force that invades Heliopolis. He pilots the stolen mobile suit GAT-X102 Duel. During a confrontation with Kira Yamato, Kira inflicts a wound upon Yzak's face that leaves a scar and causes Yzak to swear vengeance. Initially a cold-blooded, remorseless killer, Yzak becomes disgusted by the act of war and doubts whether ZAFT's intentions are correct. In a combination of Dearka Elsman's words and witnessing the destructive power of the Genesis, Yzak sides with the "Archangel" in order to stop ZAFT's plan on destroying Earth. During the events of "Gundam SEED Destiny", Yzak is seen as the commander of a ZAFT faction. He is voiced by Tomokazu Seki in Japanese. In English, he is voiced by Michael Adamthwaite in the Ocean dub, and by Daman Mills in the NYAV dub.