The scary-looking but good-hearted "Thing" is expected to be the most popular of the bunch, according to Shari Maxwell, vice president of Extreme Halloween, Inc. His scaly skin is tough to create on your own, so purchasing a premade costume is the simplest way to take on his persona. You'll also find online outlets and store shelves stocked with Mr. Fantastic and Dr. Doom gear.
But if you can't score these hot costumes, consider whipping up your own version. For Mr. Fantastic: Start with a blue one- or two-piece outfit and add black cuffs, socks, and shoes. Cut out and attach the number 4 to identify yourself as a member of the Fantastic crime-fighting crew. Want to portray evil Dr. Doom? Opt for a drab brown or olive shirt and robe over black pants. A purchased Dr. Doom mask is the finishing touch!