Some group costumes can be tough to put together because they nearly require the right number of folks. Fortunately, the crew of the Mystery Machine has solved this problem, too! Team up as the Scooby Squad, since they're always splitting up in teams. While Scooby and Shaggy are off getting into trouble, Velma, Fred, and Daphne are great for a group of 3 Halloween costumes! When it's time to finish the episode, bring everyone together and unmask that ghost!