Hammerhead vs Mister Mxyzptlk Facts
Creator
Gerry Conway, John Romita
John Byrne
Universe
Earth-616
New earth
Publisher
Marvel
DC comics
In Comics
The Amazing Spider-Man #113 - They Call the Doctor...Octopus!
Superman Vol 2 #11
Citizenship
American
Unknown
Marital Status
Single
Single
Occupation
Not Available
-
Relatives
Not Available
Not Available