Yokai

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 is a character released with, and is a part of the Big Hero 6 character collection.

About
Professor Robert Callaghan, also known as , is the main antagonist of Disney's 2014 animated feature film, Big Hero 6.

Professor Callaghan was the head of the San Fransokyo Institute of Technology's robotics department, and mentor of Tadashi Hamada. He assumes his masked supervillain identity after a tragedy drives him to become a malefactor bent on personal vengeance.

Interactions
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