Speculative connection to D. B. Cooper
Although fairly obscure in the English-speaking world since it did not appear in English translation… the comics series nevertheless gained a small measure of notoriety in 2009 in the United States as a result of speculation concerning the identity of the 1971 airplane hijacker who came to be known as D. B. Cooper, but who had actually identified himself as “Dan Cooper.”
Kaye and colleagues suggest the hijacker may have become a fan of the comics while on a tour of duty in Europe, or that he may have been of French-Canadian origin since the Dan Cooper comics circulated in Quebec. Some of the comics storylines seemingly match aspects of the D. B. Cooper case, including jumping out of a plane with a parachute, as well as a ransom being delivered in a knapsack.[1][2]
The fact that the Dan Cooper comic series circulated in Quebec also fueled speculation that the hijacker may have been French Canadian, many Quebec natives being able to speak English with no discernible accent. The theory of Cooper being Canadian is coherent with his use of the unusual phrasing “negotiable American currency”, which suggests that he had a non-U.S. background.[130][131]