Heaven Canceller

冥土帰し

Frequently referred to as "the Frog-Faced Doctor" by Touma, he is an exceptionally talented and kind-hearted physician capable of curing any disease and healing any wound, even terminal ones. He is only incapable of repairing specific brain-related injuries, such as the "Imagine-Breaker Boy's" damaged memories and Accelerator's computational ability. However, in the latter instance, he was able to configure Accelerator to control his powers with assistance from the Misaka Network. This medical genius also oversees the life extension devices for Academy City's ruler, Aleister Crowley, while simultaneously supporting the city's very foundation.