Marvel Superheroes by Alliterative Real Names A-Z

For each alliterative real name that is provided, supply that character's superhero name. Each real name starts with a different letter of the alphabet, with one name per letter, EXCEPT for letters for which no alliterative real name could be found (I, N, and U). These letters have been supplemented with alliterative real names from other, repeating letters so as to maintain a quantity of 26 answers. (If anyone taking this quiz is aware of Marvel heroes whose real/civilian names are alliterative and begin with I, N, or U, please inform me of these characters in the comments so I can add them to this quiz. Thank you.)