Their are special costumes for Halloween in Rivals of Aether. They give the characters Halloween colouring, with blacks and oranges. They look cool. The developers, Dan Fornace, are saying they will replace these with Christmas costumes when Christmas comes, and later other costumes. Why? Why not just have all the costumes in the game? Its not hurting anyone to have these costumes. If people don't want to use the Halloween costumes when its not Halloween don't have to use them, its just more options. I think I have an idea. When that holiday is around (So for Christmas, during Christmas.) everyone is just given the costumes. After Christmas, you lose the costumes and they must be unlocked, by doing something like, for instance, spiking your opponent's stock away 30 times.