From Scott Berfield
The cover painting for Bop and Wrestle from Mindscape was a joke played by the art director. The screaming fans are the executives of Mindscape at the time. Some of those pictured are Sandy Schneider, Emil Heidkamp, Roger Buoy, and Jack Nichols (the art director) who is the one being pinned.
A box credit says "Licensed in conjunction with International Computer Group."