Zechs Merquise

Zechs Merquise is the alias of Milliardo Peacecraft, Relena's brother and the would-be heir to the Sanc Kingdom. He believes himself unworthy of his birthright because his hands are too bloodstained to rule a pacifist nation, he became a soldier in OZ, hiding his face behind a mask.

His relationship with Lucretzia Noin is very obviously hinted at-one of the most straightforward relationships in the series, although they are separated often.

He is a close friend of Treize Kushrenada, but his obsession with fighting Heero Yuy leads OZ to disown him. Zechs later resumes the name Milliardo Peacecraft and heads the organization White Fang.