* The Tails Doll's appearance is unsettling. It has large, empty eyes, a ghostly pale complexion, and a disturbing smile. Its body is also disproportionately long and thin, which makes it look even more unnatural.
* The Tails Doll's behavior is also strange. It moves erratically and unpredictably, and it often makes strange noises. It also has a tendency to appear and disappear suddenly, which can be very unsettling.
* The Tails Doll is associated with a number of creepypasta stories. These stories often depict the Tails Doll as a malevolent entity that is capable of causing harm to those who encounter it.
While it is impossible to say for certain whether or not Sega intended for the Tails Doll to be scary, the evidence suggests that this may have been the case. The Tails Doll is a unique and memorable character who has captured the imagination of Sonic the Hedgehog fans for years. Whether or not he was meant to be scary, there is no doubt that he has succeeded in unnerving many players.