Touya Todoroki

After waking up from a three-year coma & finding himself in the nursery of an orphanage, Touya has grown taller, his white hair had become spikier, now has several patches of reddish, wrinkled skin covering his lower eye sockets, ears, his upper chest and jaw areas (later becoming patches of gnarled, wrinkled, purple skin that covered much of his lower face and neck, all the way down past his collarbone, below his eyes, around his torso and on his arms & legs) from using his now blue fire more and more.

After bluntly refusing an offer to be trained by anyone else other than his father, Enji Todoroki aka Endeavor, he ran away from the nursery (after setting it alight). He returned home, only to discover that his family thought he was dead, and finding that his father was continuing his cruelty (and training toward Shoto).

Seeing his father continue with his "perfect creation" and how his broken family moved on from him, Toya was reminded of his status as a "failure" and became mentally broken. Resigned to his fate, Toya decided to embrace his "death". Upon renaming himself "Dabi", he became a stoic, aloof, confident, and focused individual who rarely showed emotion...all the while, also crude, violent, cautious and observant. (I don't exactly know how old he is during/after the incident so, let's just age him up a bit!)