Mr. Sparkles

Mr. Sparkles is a deranged host of the fictional web show, Maximum Insane Obstacle Challenge, in Big Hero 6: The Series.

Role in the series
Mr. Sparkles first appears in the episode "Mr. Sparkles Loses His Sparkle". In it, Sparkles's popularity is threatened and eventually tarnished when a viral video of Mochi, the Japanese bobtail of Cass, overtakes his position as the most watched figure on the Internet. Mad with jealously, Sparkles kidnaps Mochi and broadcasts his plot to send the cat into space should no one complete his challenge in time. Go Go Tomago, Honey Lemon, Wasabi and Fred take on Sparkles's challenge, but all fail, save for Go Go. Instead of releasing Mochi as agreed, however, Sparkles launches the cat into space regardless. Although Mochi is saved by Hiro Hamada, Sparkles accomplishes his goal of becoming a "wanted celebrity" by becoming a target for the police.

Trivia

 * Mr. Sparkles was at one point intended to appear as a villain in the original Big Hero 6 feature film, but was scrapped later in development.
 * Mr. Sparkles is alluded to in background advertisements prior to his debut episode.