User blog comment:Xilinoc/Ch. 549 - The Stormbringer/@comment-6916556-20130919215544/@comment-2211792-20130922055007

Andygoesrawr from BA has suggested that there was a BG robot series, and BG9 is the 9th model. God knows what happened to the previous eight, but it would answer my wonders about why there aren't other robots like BG9 if it's so damn effective at doing its job. There actually might have been before.