We sell some pretty cool aprons over in the Neatoshop, including some superhero ones, but just in case we don't have exactly what you're looking for, check out Bethany Sew-and-Sew's shop. Bethany makes customized aprons in superhero styles and more. She even has some Princess Peach, Mario and Alice In Wonderland ones that are simply adorable.
Link Via Craftzine