There was a calendar poster that mostly features Bonk, Air Zonk, the occasional Tengai Makyou individuals (even before some of them were introduced, like Kabuki, I believe), and other various characters from the games. It was stated featured in the Japanese magazine known as "Gekkan PC Engine" made for the year 1992.
Some of the notable pictures to be featured include a pink plesosaurus/seadragon-like creature, Air Zonk doing a few stretches/dancing, Bonk biting on King Drool's head, King Drool in a cool pose on December, an old Air Zonk and Bonk, Bonk angry in several locations, an excited Air Zonk, Air Zonk dressed up as Santa Clause, Air Zonk dressed up as Santa Clause riding in a sleigh being pulled by a cool reindeer (my personal favorite), Air Zonk riding in a car, Punchy Pedro, Super PC Genjin (perhaps a remiscent of "SuperPCGenjinGrafx"
) in the first month, Air Zonk in scuba gear, Bonk eating a piece of meat, and even Air Zonk as a snail! King Drool's head is also placed for the two Friday the 13ths that occured that year, meaning that he could have brought some bad luck
. For my birthday, which is on January 15th, Bonk in a kimono is next to that day (which, in fact, there are several Japanese cultural artifacts for that month; apparantly, they celebrate a holiday then).
The calendar poster itself can be seen in the links, avaiable in two different sizes:
http://www.pcengine.co.uk/Images-Artwork/ART-PC_Kid_Calendar_large.jpghttp://www.pcengine.co.uk/Images-Artwork/ART-PC_Kid_Calendar_small.jpgAs a side note, I hope that Sunteam_Paul is able to fully keep this intact for the update on his website. It is one I'm very fond of
.