This cosplay is based on his animated film appearance, where they slightly toned down his shark-like appearance. In fact, many of the cosplay you’ll be seeing are pulled from that design. He still very much has some of them of course, such as the fin and the pigment of his skin, but he doesn’t look like a Street Shark. The fin atop Nick Shadow’s head is just the icing on the cake, spiderman suit looking like something Yondu from the Marvel universe would have.