Here’s something very cool. The middle review on this page is of the new indie comic book Teenage Mutant Ninja Turtles. Seven years later, one of the creators of TMNT, Kevin Eastman, bought Heavy Metal. 

(Heavy Metal issue #95, February 1985 – Page 49 Teenage Mutant Ninja Turtles review by Howarth)

Addendum: Kevin Eastman told me that he framed the cover of this issue.