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Ugly Naked Guy is probably the most talked about - but least seen - recurring character in Friends.
He was the nudist (partial to lighting candles starkers and inviting naked friends over, including Ross) who lived across the road from Monica and Rachel's apartment and started off as Cute Naked Guy, according to Phoebe, before he became overweight in 1993.
So who was the Ugly Naked Guy that they loved to stare at? Where is he now? And why was he always, well, NAKED?
Todd Van Luling from The Huffington Post, has documented his epic year-long journey to find out exactly who the uncredited character really is.
So Ugly Naked Guy is actually Jon Haugen.
"There's only one Ugly Naked Guy, man, and that was me," he said.
"The reason I never came forward was because I was just keeping it mellow because Warner Brothers was keeping it mellow. They wanted everybody to have a guess who I was."
And for those of you who were wondering - no, he and David Schwimmer did not actually strip naked for their shared mini muffin-eating scene. They were wearing boxers...
