The writer has earned more from his minor character Lucius Fox in Christopher Nolan's films than he has from the Canadian mutant, who has currently appeared in six films and starred in five of them.
Wein said that it is frustrating that he has not been credited for Hugh Jackman's character in 20th Century Fox's franchise.
"It's less frustrating for the characters I created at DC," he told the Los Angeles Times.
"Money comes with the anonymity, at least. I have contracts that guarantee me some small piece of the action. Lucius Fox has earned me a great deal more money than Wolverine ever has, although I will say that for the latest film Marvel did send me a nice cheque."
Chris Claremont and Frank Miller - upon whose miniseries new film The Wolverine was based - did not receive a credit in the movie either.
Wolverine was first introduced to comics in the final panel of The Incredible Hulk #180 be Wein and Herb Trimpe.
Lucius Fox - who was played by Morgan Freeman in Nolan's films - was created by Wein and artist John Calnan in 1979.
Watch Digital Spy's exclusive 'Ronin' featurette for The Wolverine below: