Doctor of Riddles

The Doctor is having a bit of an off day. First, he finds out he's somehow regenerated as a girl. Then he's approached by an arrogant member of an organization called the Men In Black. Later, he meets two companions that are a bit odd and one that seems to be keeping a secret. oh, and we can't forget the aliens. yes, the Ptaroninolohaminiousalonasickorals are planning on attacking the planet, with the Roneleons leaving behind cryptic riddles, as if to tease him. oh, you can't pronounce ptaroninolohaminiousalonasickoral? it's okay, just call them ptarons. Who's behind it all, and how will he get out of this one?