A drawing I did and uploaded onto DeviantArt on Nov 28, 2010.
I'm posting old art that I loved here as well.

Old Description from the site:
I see Tails Doll as a robot like Metal Sonic and Robo Knuckles. I also envision it with abilities such as:
-Chaos Control (derived from the jewel/power plant in its head. I figure it could be a mini-false chaos emerald eggman made for it to be strong.)
-Laser Eyes(normal for robots)
-Guns(hidden in its paws. Other robots have them, so why shouldn't he?)

This a storyboard of Tails fighting Tails Doll. Read from Top-Left to Top-right, Mid-Left to Mid-Right, and Bottom-Left to Bottom-Right.