The diaper-wearing adult who allowed Octo-Mom to spank him during a wild fetish video is actually a convicted criminal who was once accused of beating his ex-lover, RadarOnline.com has exclusively learned.

You might remember "Tattoo" -- otherwise known as David Gonzalez -- as the man who orchestrated Nadya Suleman's yard sale last year in a desperate effort to raise money to pay off her mortgage.

But look out Nadya, Gonzalez isn't the fetish-admiring man you think he is: he's got a pretty extensive arrest record and he stinks at managing money!