Yokai

 is a limited-time character released with the Big Hero 6 Event Update on 4th July 2018, 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
Level Ups=


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 * -|Activities=


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 * Testing Microbots
 * Testing Microbots



* San Fransokyo City
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 * A Chase for Info
 * A Chase for Info



* Frederickson Grounds Lvl 8
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 * Internal Attack
 * Internal Attack
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* Ito Ishioka Robotics Lab
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 * Revisiting a Former Life
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 * Revisiting a Former Life

* San Fransokyo City Lvl 8
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 * Downtown Chase
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 * Downtown Chase
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* Ito Ishioka Robotics Lab Lvl 8
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 * Confrontation
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 * Confrontation
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 * Higher Ground
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 * Higher Ground


 * }
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