Changed again?

Could someone explain this to me please?
In the Dreamwave MTMTE guidebook volume 2, Powermaster Prime's engine/powermaster partner is called Ginrai, yet I've always known him as Hi-Q. Where did Dreamwave get the Ginrai name from? If Powermasters make an appearance in the IDW series, which name would be used?
Thanks.
In the Dreamwave MTMTE guidebook volume 2, Powermaster Prime's engine/powermaster partner is called Ginrai, yet I've always known him as Hi-Q. Where did Dreamwave get the Ginrai name from? If Powermasters make an appearance in the IDW series, which name would be used?
Thanks.