Garaki. It was eventually revealed in the My Hero Academia manga that Garaki was the doctor who told Deku that he didn't have a Quirk and was also the grandfather of Tsubasa, the winged boy who was ...

What many people didn't notice was how he was the Winged Nomu who attacked Deku during the Stain arc. He also happened to be Dr. Garaki's grandson, making the entire situation even more disturbing.

Vigilantes, the spinoff/prequel manga that ran alongside My Hero Academia for 6 years, is finally getting an anime adaptation ...