TV Tropes ||  Tokyo Ghoul || ”White Hair, Black Heart”
↳In many works, especially anime and video games, white hair quite frequently indicates a villain or, at the very least, someone to watch out for. Especially in characters typically too young to have white hair. Tokyo Ghoul plays with this, having several characters with white hair. Arima and Tatara play it straight, both serving as ruthless agents in their respective organizations. Both are described by the author as “sadistic”. Yomo Renji is an intimidating figure when first introduced, but turns out to be a kind and supportive mentor to Kaneki. While violent and temperamental in his youth, even then he was more troubled than malicious. Downplayed with Kaneki Ken, our unfortunate protagonist. The ordeal that turned his black hair white left him a far more ruthless individual, as well as mentally unbalanced. Similarly, Mado Kureo initially seems to be nothing more than a sadistic monster until we begin learning about him after his death. While brutal and merciless towards Ghouls, he was a devoted family man and supportive mentor remembered fondly by his daughter and former partners. [x]