THE TAILS DOLL, hoo boy. The first ever form of creepypasta I ever got into.http://www.quackerandbowen.com/whatisthetailsdoll.html That's an answer as to what it is, and http://www.quackerandbowen.com/sonicr.html this is that site's main Tails Doll creepypasta section. There's a lot of it.
I just read further; you already knew about them IGNORE ME I'M SLOW
Couldn't ignore you, D. :D-Ethereal