Black Widow (Natalia Romanova)
First Appearance: Tales of Suspense #57 (Sept. 1964)
Created by: Stan Lee, Don Heck, and Don Rico
Although there have been several characters who've assumed the Black Widow identity in the comics, redheaded Russian babe Natalia Romanova is definitely the most memorable in the hearts of fanboys.
Hot girl in a catsuit? Check. Weird bracelets? Check. Black Widow symbol belt buckle? Yep. Congrats costume designers, you hit the nail right on the head with this one.