I’m guessing those names come from the very top.

The lines for the two controller ports are duplicated on the NES’s expansion port, so this device is able to send inputs into the NES as if it were a real set of controllers. I’d call it a neat hack, but it doesn’t require any hardware modification to the system other than removing the expansion port cover, so it feels much too clean to call a hack.

It fits, English and JavaScript are both three languages in a trench coat.