How do you kill Tails Doll?

Answer 1

1. read over the rules of the curse

2. get a sonic plushy (not the others like knuckles or shadow and stuff).

3. play living in the city backwards in a locked room

4. when the red light shows, shout the reason why you want to defeat him, then shove the sonic plushy in its face.

5. make sure he sees' the sonic plushy

good luck, and, you might want to cut the gem of its head, if its possible.