A creepy geezer.
Don't look now, but that creezer is stalking you.
1 more definition
Creezer is a derivative of the word "creez" meaning " being creative or on a forefront of a trend", and the one who does that can be called as creezer.
The well known company "Creezer Technologies" have the word that defines their advancement and being the most important part of the technology.