Portraits revealed through your current reading position.
A past enemy of Carl's, named as one of the benchmarks his throne room rage surpasses.
Quan Ch is invoked purely as a measure. When the white rage over Empress D'Nadia burns all three of Carl's eyes, he says he'd never felt anything like it — not with Maggie My, not with Quan Ch, not sitting in that gas station with the button that would end it all.
Being on that short list places Quan Ch among the handful of people who provoked Carl's deepest prior anger, now explicitly exceeded.
Prior antagonist used to gauge the scale of Carl's hatred for D'Nadia.
Also appears in books you've already read — spoiler-safe to their endings: