Yellow Killer Whale mascot costume character dressed with a Shift Dress and Cummerbunds from our Killer Whale mascots. At Custom Mascot Costumes, we understand the importance of creating a memorable experience for your customers and guests. We specialize in custom mascot costumes, providing classic and modern designs to fit your needs. From corporate events to festivals, our costumes are sure to make a lasting impression.. The Yellow Killer Whale mascot costume character dressed with a Shift Dress and Cummerbunds will be perfect for your Killer Whale events. Many sizes available, premium quality, fully customisable with texts, logos, colors.