Any possibility of Judge Dredd? 3 regular flippers and 1 short one? There was a flipper top mod several years ago with the 4 dark Judges on each one (Death, Fear, Fire, and Mortis) that was awesome, but he stopped making them rather quickly and they are not available anywhere. The only flipper top available is from Mezel Mods and it is a generic yellow and black (hazard zone) style topper that does not really go with the game, but is better than nothing.
The dark judges would be great, but there are other possibilities with the comic being so huge and long running. And there are plenty of JD machines still out there in the wild.