I have no idea who The Ministry of Unknown Science are, although it seems not beyond the realm of possibility that their Eric Trueheart is the same as the one who worked on the late, great, lamented Invader Zim as a writer.

In any case, their short film Kung-Fu Fuck-You is a work of brilliance on a par with the cutscenes in Rag Doll Kung Fu, and marks them as a group to watch.

No, I have no idea what the Leprechauns are doing there either.