The Energon Pub

So I used to be a huge Transformers fan and had a whole heap of figures... which I got rid of when I fell out of the fandom for the better part of a decade. While I can remember all of the official toys I used to have, I'm struggling to remember the name of an off license transformer I used to have, as far as I can remember he:

• Was a black and white boxy car (Not too dissimilar to Animated Soundwave) with grey robot parts
• Was at least voyager sized (Though this could just be nostalgia)
• Had a VERY simple transformation - Legs folded down like Classics Prowl and was basically a spychanger on his top half. Basically all ratchet joints.
• Would have been in stores ~2007-2008, potentially bought in England and while he definitely wasn't official, I think he was more than just a $2 shop knock off.
• He had a mohawk and sunglasses, so you know he was cool.

I know this is an eclectic description (That potentially has some false information), but I'd appreciate finding out just what this damn thing was.

cybertron cannonball?