Watch the full episode of Marvel's Moon Girl and Devil Dinosaur Season 1 Episode 4, "Check Yourself". When Lunella loses a game of chess against a supercomputer, her obsession with winning drives the frustrated computer to program every device in the school to attack her.

Watch the next Marvel's Moon Girl and Devil Dinosaur full episode here:    • Marvel's Moon Girl and Devil Dinosaur...  

Watch Moon Girl and Devil Dinosaur on Disney Channel! And check out more Moon Girl and Devil Dinosaur videos here:    • Marvel’s Moon Girl and Devil Dinosaur  

Marvel's Moon Girl and Devil Dinosaur, based on Marvel's hit comic books, follows the adventures of 13-year-old super-genius Lunella Lafayette and her 10-ton T-Rex, Devil Dinosaur. After Lunella accidentally brings Devil Dinosaur into present-day New York City, the duo works together to protect the city's Lower East Side from danger.

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