From the overly righteous Captain America to evil villains like Thanos, cosplay costume create your own Marvel story by checking out our wide assortment of Marvel superhero costumes and accessories or visit: Halloween best cosplay costumes Costume For Kids. SakuraCon and ANCEA are not responsible for any damage or loss to a prop or costume brought on-site.. All sign-ups are Online Only – No Entries will be accepted for the show or wait-list at the convention.