Actually on second thought, Roberto isn't a European - definitely an American - the places he chose were smallish towns in suburban USA, and then to use Mastergrip as his 'company' - I'd vote for a American - but who?
When roberto made his first appearance and his similarity to nancy was pointed out - someone rushed to his defense on the grounds that www.mastergrip.com does actually exist - sounded dubious at best to me even then - I can't seem to find the posting - the person who made that statement would be my best guess.