Relena Darlian, the one who was suppose to be killed by Heero because she saw his face. She is the daughter  of the Darlian Family.  But she is really from the Peacecraft family.  Her only living relative is an Oz member named Zechs Merquise/Miliardo Peacecraft.  Relena is the Angel of the Battlefield.  She argues for peace through out the Gundam Wing Series.  She is yet a true pacifist.