Although somewhat ambiguous and up to some interpretation based for the majority of the series, his motivations for leading Romefeller and the World Nation in the final battle are very clear (as he states to the comatose Lady Une). He believes Relena is the leader needed for the future and thus cannot lead the Earth in war. Thus also is related to his reason for allowing Wufei to slay him in their final duel. He understood that his death, as a powerful symbol of wartime and the old guard, was necessary for the future of the Earth Sphere.
This is similar to the Zero Requiem planned by Lelouch in Code Geass (for those who are familiar). With all the hatred of the world focused on him, he united everyone and fostered peace throughout the world. Same concept. Changes to the biography should be noted. If there are significant opinions then multiple opinions should be noted, not simply that his motivations are unknown as he CLEARLY states them in several episodes at the end of the series.--Nephlyte348 (talk) 08:02, January 13, 2013 (UTC)
I fail to see how Treize is Aryan whether it be Iranian or the Nazi definition. Blue eyes and brown hair only halfway fit either definition.
- Treize clearly has red hair, not brown.
And coming from a Norse family, I grew up understanding that redheads (even by Hitler's standards) were considered Aryans, alongside blondes.
Ironically, although his appearence might suggest he is Aryan - his surname hints at Semitic origin, so thusly he likely isn't anyway.
Which is fine, he's a cool character no matter what ethnicity he happens to be.