Yep, Bohemian Rhapsody

Yep. But even then, unicorns of legends were not nice, like Disney and other shows made them.

Look up the pak'ma'ra. They're an alien race from B5, that bear a strong resembles to the Ood, as well as Cthulhu. I used the name in the meme instead of Shoggoth because I couldn't remember them at the time, and I needed something to fit the Spanish Inquisition theme.

It was a spoof for the pak'ma'ra of Babylon 5. You may be reading too much into it.