Tails Doll is a character in the game Sonic R that is cursed and can come out of the TV to kill the player. The doll is a metallic, ghostly skeleton with glowing eyes and sharp blades, and it spends more time hovering than walking. It's meant to match the fox's cute factor, but some say it fails. There are several ways to activate the Tails Doll curse, including: Complete the game 100%: This includes characters and courses. Tag supersonic as Tails Doll: This can be done in the GameCube version of the game on the Sonic Gems Collection. Sing "Living in the City" backwards in a dark bathroom: Stand in front of a mirror and sing the lyrics backwards to make a fake red glow appear in the mirror. After activating the curse, the player may experience a day of bad luck, such as waking up late or losing important items. Some theories about the doll's intentions include that it devours the player's soul. Tails Doll can also be unlocked as a playable character by winning a one-on-one race against him in Radical City. However, some say he's not a great character to play as because he's slow and has poor handling. Tails Doll, also known as Operation/Project "Deadly Cuddles", is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is a robot doll version of Tails, built by Dr. Eggman to weaken the defenses of New Mobotropolis.