'Mazing Man 12 (Dec 86) is the final issue of the series, and features two stories by Rozakis, DeStefano and Boldman. Neither tale has anything to do with Frank Miller's Dark Knight Returns, despite the presence of that Batman and Robin on the cover. I absolutely hate things like that. A cheap way to lure in a reader, who will be disappointed, no matter how good the actual contents are.
The first story in the issue is fairly low key. Denton needs a new typewriter ribbon, and he and 'Mazing Man had out in search of one.
The main joke here is that people are all using computers now, and Denton can't find a ribbon anywhere. There is some silly, assorted chaos along the way, but this really doesn't pay off until the second story.
Because, you see, it's Denton's 30th birthday, and everyone comes by for the party. And what does Denton wind up getting? Why, a computer, of course!
More time is actually spent on KP, who is older than Denton. Because her younger brother is turning 30, KP goes through huge trauma about being old.
Honestly, this isn't my favourite issue of the run. I think it's one of the weaker ones. So it's a shame that the series went out this way, especially given the cheesy cover. But this was not the end for 'Mazing Man. He would return a few months down the road in a series of specials.