"Doug" is the boogeyman for the WI subforum. I recall a time that someone I knew in real life created an account and started posting here. He was accused of being "doug" within a few posts. It's a strange phenomenon that has been going on here for many years. It's weird to me how quickly people that join the forum adopt the same paranoia. My suggestion is to treat each account as an individual. If there is someone using multiple accounts, against OCDO guidelines, who the hell cares. Let them indulge themselves with their fantasies and delusions of grandeur. Don't let them "Live rent free in your head" to paraphrase someone's tagline.
I figure people that have a tendency to see boogeymen behind every bush are equally susceptible to seeing "puppet" accounts on websites.