Younger White

 White, when he was young (ten / fifteen) and in the Streets of Grey, a gang of streets kids who protest the justice system of Rivier. The justice system isn't *that* bad and it's actually ahead of its time in the time period this is set in (latter end of medieval times). It just has some flaws, like all things have, that exclude or unfairly shun kids like White; an illegitimate half Blue Hair. (His hair naturally comes in blue, but not the white part. That he dyed.)