Kamen Ground

You know how in The King of Fighters, members of the Ikari Warriors team have a lot of elaborate poses and attacks that don't seem to make sense for soldiers to use? There's a reason for that. Most of these are tributes to Japanese pop culture, particularly cartoons and tokusatsu, the spandex-clad superhero genre of shows which eventually spawned our own Mighty Morphin' Power Rangers. The Rebel Spark, where Leona thrusts a knife hand into her opponent and makes sparks fly out the other side, is actually a finishing blow from the Kamen Rider Black RX series. 

Hey, don't get mad at me! I didn't come up with this!
(image from Den of Geek)

It's easy for Americans to miss this detail, given the fact that the only exposure most of us have had to Kamen Rider was that lame Saban series from the 1990s where the title character was an alien descended from insects, with a Furby as a sidekick. The 1990s sure were, uh... something, weren't they? Special thanks to Reddit for catching this reference.

There's something else I should mention before I go. Now there are two ways to hack your Sega Genesis Mini... Project Lunar and a build of Hakchi tailored to the device. Owners of the system are already choosing sides, with some players preferring the hack that came first and others appreciating the additional features of Hakchi. Games that won't run on the default M2Engage emulator can on Hakchi by using PicoDrive instead. Rumor has it that the option to switch emulators will soon be added to Project Lunar, making the decision to choose between the exploits that much harder. Eh, I'll just stick with what I've already got... no sense in complicating things.