The City of Heroes team has announced that it is running several Halloween-themed events through this Sunday. From special Halloween critters to Halloween-themed costume pieces, the CoH team has it all covered. "From ghosties and ghoulies, and long-leggedy beasties, and things that go bump in the night, deliver us."
Classic Costumes (Treats): Receive a special costume that can turn you into a Banished Pantheon, Coralax, Carnival of Shadows, Freakshow, or other characters.
Trick: If you're not lucky enough to get a treat, a trick may spawn special Halloween enemies instead. If you and your friends manage to defeat one of the spawned enemies, you could receive special Halloween Salvage. Collect this Salvage and redeem it for one additional costume slot (giving a character up to a maximum of five total costume slots).
Read more here.