From a medieval French nickname meaning “white, fair”. This name and its cognates in other languages are ultimately derived from the Germanic word blanc.
It’s a wrap.
Impulse Gundam Blanche
Appearing in the manga, Mobile Suit Gundam SEED ASTRAY Princess of the Sky, it is a predominantly white-colored Destiny Impulse Gundam R. Piloted by Elsa Weiss, its color scheme is meant to contrast the MBF-P0X Gundam Astray Noir, which is piloted by Elsa’s partner, Dante Gordigiani.