1. Michaela Gulasy, 16, of Tulsa, is dressed as a Vocaloid named Miku Hatsune 2. A mouse helmet based on an Adventure Time character built by Alec Mitchell. 3. InuYasha's sword built by Michael McNeelis, of McAlester. 4. Betsy Wackwitz, of Houston, holds a piece of costume based on Perona from "One Piece." 5. Sam Gross, a steampunk fan from Wagoner. 6. Eien Carpenter, of Yukon, wears a homemade Bowser costume from Nintendo's Mario Bros. 7. A modified Nerf gun is customized into a steampunk weapon. 8. Caelan Suntken, 8, from Bixby, dresses as Domo. 9. Angelo Moore, 19, from Hays, Kan., painted her teeth to look like Karkat Vantas, a character from "Homestuck." 10. Thin fingers from "Parasite Eve" were built by Hadassah Hendrickson, of Claremore. "I love becoming the character," she says, "and being her for a day." 11. Richard Tripp, of Neosho, Mo., models his Hello Kitty mask. 12. Savannah Dean, of Springfield, Mo., wore a wig, ears and wings to become Fluttershy, from "My Little Pony Friendship is Magic." 13. Sisters Anna and Erica Silliman dressed as Wario and Waluigi from Mario Bros. 14. A Godot mask from "Ace Attorney" created by Cassie Skinner, 15, of Broken Arrow, is made from sandwich baggies she colored with a red marker. 15. Anna Taylor, 14, of Rogers, Ark., built a mask to depict The Prince from "Katamari Damacy."