Rilina Pittskert. (Peacecraft) >>>> Zechs's long lost sister, who was at first going by the name of Rilina Dorian (Darlian). At first she thought that the ambassador for peace, Minister Dorian (Darlian) was her true father until he revealed to her that she was a member of the royalty of the Empire of Sango (Sanc). Nosy and inquisitive by nature (sometimes, irritating ^^;;) she is solely committed to peace. Once called, Queen of the World, being blackmailed by the current powers on Earth, this title is only symbolic to unite the people to follow OZ and the Rockefeller Foundation. This she did, (rather unwisely, since she didn't know how strong she is with 5 Gundams on her side!!! my opinion...), much to Zech's disappointment.

Thrace Coslander (Treize Khrushrenada) >>>> Head of the Special Alliance Team and leader of OZ. Shrewd and extremely clever, he managed to rally his side to become the most powerful man on the Earth nation. He always marveled at the honor and duties of being a soldier, and found war a necessity for the world.

He is also Zechs's long time friend and Zechs followed his commander Treize closely during his career on OZ, even to the point that other soldiers taunted Zechs behind his back as Treize's "pet."

However at one point, Zechs battled helplessly in space alone without the aid of Treize. The mask that he wore broke and vowed that he would sever his ties with Treize. This betrayal would be the start of Zechs and Treize as enemies in the final wars, with Zechs leading the White Fangu (Fang) resistance and Treize leading the Earth's forces.

Hiiro Yuy >>>> Brave and ultimately skilled in the arts of piloting a mobile suit, Hiiro Yuy's personality also seems rather bleak and insensitive. And with an obsession towards death, always threatening to kill all those who would be an obstacle to his mission, even the nosy Rilina Dorian (Darlian).

His first encounter with Zechs sparked the beginning of the series and this would be the benchmark till the end. Amazed at Zechs's skill in manning Tallgeese, he found it the greatest honor to kill and defeat Zechs in battle. Seeing that Zechs represented the White Fang against Treize's Earth nation, Hiiro saw that eliminating both Zechs and Treize would be the final step to peace and liberation, especially of the Colonial Stars. Zechs patiently waited for the young pilot's arrival and their last battle would constitute a loss for Zechs.

But Hiiro spared Zechs's life, despite his former wish of killing him, because he "wouldn't want Rilina to be sad."

Rhine (Lucrezia Noin) >>>> Zechs once remarked that Rhine (Noin) was always giving way to him. In their days at the military academy in Lake Victoria, she placed second to Zechs in honors. Soldiers at OZ marveled at Noin as they did her commanding officer, Zechs. She was one of the few female high ranking officers and her performance was exceptional.

Zechs placed the care of his sister, Rilina, under Rhine's (Noin's) care and she saw to it that the princess of the Empire of Sango (Sanc) would be its next ruler. Like Rilina, Rhine (Noin) disliked war and sided with Rilina to keep peace, even to the point that she blocked Zechs and his Epyon attack during the White Fangu (Fang)'s Libran attack on the Earth nation. Zechs was as reluctant as her in fighting against each other and retreated so that he wouldn't fight her. But as always, Noin was always Zechs's primary supporter. She is the character in the series with the obvious staunchest fascination for Zechs. (One-sided? Hard to tell. Zechs's actions were a bit vague compared to Treize's affections for Lady Ann (Une).)

"I would stay here awhile..." she told Zechs during the final battle between the Earth nation and the White Fangu (Fang) resistance that he led. This was the real war, but Noin steadfastly stayed by Zechs side while he waited for the Zero Type Wing Gundam to come and meet him.