Hey, You Know What I Just Realized?
Metus. The name is so simple, and cool, and belong to the ice Agori. But wait. A u in Japanese is usually silent, no? So, I'm gonna do a comparison.
Mets=The plural of Met
So, as such, we can assume two things from Metus. That he's a Mettaur in disguise, and Metus is actually from Megaman. I always knew there was something off about that sword... =P