The Crindol, Knutt, Kujo, Pucu, Sindi, Speiro, Zola, Zoosh can now wear the Sewers Costume and the Dakota, Echlin, Newth, Nino, Renat, Rofling, Yakubi and Yuni can now wear the Thunder Costume. You can win a Sewers Costume from the Sewer Cleaner mission and the Thunder Costume from Greedy Gertrude mission.