Heck Meck was a science fiction fanzine published by Manfred Kage and Mario Kwiat.
This title appeared in the 1960s, with issue 12 released in 1966, and the announcement in this issue that Manfred Kage would be joined by Mario Kwiat, and that Heckmeck would be their joint publication, with all material signed with their identical initials, "M.K.". The front cover referred to them as a "Mini Cartel ala Fandom". The exception to the rule of the initials were Mario's drawings, which would be recognizably his.
Issue 16 was published in 1967. Issue 24 was released in January 1970. It was published in Germany, with some issues in English. The size was 8.5" by 11.5", and it was around 15 pages.