Zechs Merquise/Milliardo Peacecraft

Milliardo's mobile suit crashes and he is nursed back to help by Howard and then goes on to become an ambassador to the Sanc Kingdom. Lady Une, however, sees who he really is. After a while as an ambassador, he is approached by Quinze and asked to become the leader of and organization known as the White Fang. He agrees and is taked aboard a ship where he declairs war against Treize. Now, with the Mobile Suit Epyon, which he traded to Heero for Wing Zero, he starts a "war" for outer space. He goes out with his mobile dolls and attacks the gundams, finally going for Peacemillion but is stopped by Noin who says that if he wants to get to Peacemillion, he has to go through her. After this, he gets into a final battle with Heero where he appears to have lost and been killed but he appears again to destroy a part of Peacemillion that was hurtling towards Earth. He is thought to be killed in the explosion but, later at his grave, Noin tells everyone that she knows that he is alive.

During the Endless Waltz, Noin's intuition proves right because Milliardo comes back with a new mobile suit, the Tallgeese 3, and joins the Preventers under the codename Preventer Wind. He almost kills Dekim but doesn't quite and then he and Noin go to battle against a LOT of Dekim's mobile dolls and manage not to kill any of the pilots. After the battle is over, he and Noin go off to Mars to start the Terraforming Project.