Heaven Canceler

Often mentioned as the FrogFaced Doctor by Touma he is an exceptionally gifted and benevolent physician who can cure any illness and heal any injury even if it is terminal. He is only unable to heal specific brainrelated injuries such as the ImagineBreaker Boys damaged memories and Accelerators computation ability. However in the latter case he was able to configure Accelerator to control his powers with support from the Misaka Network. This medical genius also manages the life extension devices for the ruler of the Academy City Aleister Crowley while also supporting the foundation of the city itself.