User blog comment:Xilinoc/Ch. 549 - The Stormbringer/@comment-29183117-20130917142745/@comment-11051098-20130917172927

In Japanese, it's name is given as Bê Gê Noin. I guess they didn't know how to translate it, or just went with BG9 to make it easy. It looks more cool too.

But yeah, BG9 is a difficult individual. Very powerful, knowable and doesn't hesitate to injure friends/family of its opponent to strike them. I'm curious to see how BG9 looks under the cloak and mask, if we ever get to see it. The eye/light that was showing in the slit of its mask in the last panel makes me even more curious.

Annoyingly, Bazz-B survived, but I expected nothing less from a Stern Ritter. Seems the real battles will start in the next chapter.