Full Tuning (00000号,(Furu Chūningu)?, lit. "Number 00000") is Serial Number 00000 of the Sisters designed by Amai Ao. Her details and whereabouts are unknown. However, according to her name, "Full Tuning", it can be speculate that she is not part of the network of clones and has been completely finished with a full personality.
Due to their similar serial numbers, fans speculated that Dolly was somehow related to the mysterious Misaka 00000, also known as Full Tuning. However, it was confirmed by Railgun's editor, Ogino Kentarou, that Dolly's clone is not Full Tuning.