To celebrate the upcoming launch of the Splatoon video game for the Wii U console on May 29, Nintendo is hosting one of the messiest events of the year. Disney’s Joey Bragg (of Liv and Maddie) will be one of the celebrities competing on a massive obstacle course inspired by Nintendo’s colorful new action shooter. The course, which will be set up on the famous Santa Monica Pier, will be composed of an array of ink-credible challenges inspired by the…