Hartmann held a high-ranking position in the East German Ministry of Health, which is how he ended up working at Kinderheim 511. When Tenma came asking about the orphanage and Johan Liebert's background, Hartmann became fascinated—less with helping, more with Johan himself. He was drawn to Johan's intelligence and manipulation tactics, which gave him a twisted idea: he'd try to mold another kid, Dieter, into something like Johan. That meant physical abuse. Tenma eventually spotted the bruises covering Dieter's body, got him medical attention, and managed to convince the boy to leave Hartmann's care before things got worse.
Content compiled by AnimeList.moe from publicly available sources.
