What is the name of the Yo-kai that is a little girl ghost with a bow?

The Yo-kai that is a little girl ghost with a bow is Tattletell. In the English localization, Tattletell is the name of the Yo-kai known in Japanese as Bakuroba, a spirit associated with gossip and revealing secrets.

Tattletell appears early in the original Yo-kai Watch game. After the player discovers Whisper and receives the Yo-kai Watch, Tattletell is involved in an early story about a friend behaving unusually. Her ability to inspire people makes them blurt out information they would normally keep private, which fits both her design and her name.

The character is easy to confuse with other small, human-shaped Yo-kai, but the bow and ghostly girl-like appearance identify Tattletell. She is also part of the Eerie Tribe, whose members generally have creepy designs or abilities that inflict troublesome status effects. Her Japanese name is a wordplay reference to a person who talks too much or reveals secrets.