Using ideas of what they've named enemies in the past, I think it's possible they will go with something symbolic.
Take Fyrus. Sounds a lot like the word "fire", right? Or Kholdstare. Doesn't it sound like "cold stare"?
Or it could have deeper meaning. Arrghus is named after the hundred-eyed monster in Greek mythology, Argus. Cragma is an attempt to combine the words crag (mountain) and magma.
It could also just state the name of the boss. Angler Fish is...an angler fish. Medusa's Head is...a depiction of Medusa's head.
Take the Scorpion thing, for example. It could be something relating to scorpions, like (excuse my lack of creativity) Stingeye, or Eye Scorpion, or something like that. It could be something like Scorpio, after the constellation, or Chelaeye, referring to its anatomy. It could be something completely different. Or it could just be...scorpion.
We'll just have to watch. And wait.