Feng Dan

Both a renowned member of the Xianzhou Alliance's High-Cloud Quintet and the High Elder of the Luofu Vidyadhara, Dan Feng was an important figure within the Alliance. Due to circumstances that led to the Quintet's dissolution, he was charged guilty of one of the Xianzhou's "ten unpardonable sins" and sentenced to imprisonment in the Shackling Prison, where he was forced to undergo molting rebirth and eternal banishment. (Source: Honkai: Star Rail Wiki)