Whisper

Whisper (ウィスパー) is Nathan Adams' personal ghost butler and overall guide through the world of Yo-kai. Keita befriended him upon inserting a coin into an old toy capsule machine (later named the Crank-a-kai) he found in the forest near the Holy Tree.

While not widely well-known, Whisper's specifics is that he's an Absorption-attribute C-Ranked Yo-kai of the Slippery tribe. As revealed in his trip to the Sengoku Period, he is secretly named. He can fuse with Jibanyan to form Buchinyan, or with Shogunyan to form Bushiper.

Appearance
A cartoony, white ghost with a black mask-like mark surrounding his eyes. He has blue lips with an upper-lip vaguely resembling a mustache. He has a small whisp atop his head and a tail that constantly billows.

In the Sengoku Period, he has black markings on the sides of his head and a the whisp on top is black, to resemble hair. He wore a yellow kimono and is known as Whisbe.

Personality
Despite talking in a polite and well-mannered demeanor, he has a slightly uptight personality and short temper, leading him to come off sounding a tad arrogant. As the Yo-kai Shittakaburi, he prides himself in knowing all there is to know about yokai yet often finds himself hastily checking through the Yokai encyclopedia when confronted by one. He seems to enjoy lecturing those around him despite being a bit of a hypocrite. Whisper's voice ranges from low tones to high tones, thus resulting in an odd and comical manner of speaking. He often utters "Whis~" in his speech in the original Japanese.

In the English dubbing of the anime, Whisper has a more curt personality, and has a frequent usage of biting sarcasm.

Nate
Whisper is the first Yo-Kai that Nate meets in both the anime and the game. Whisper is Nates butler who shows him the world of Yo-Kai and gives him the "Yo-Kai watch". Whisper never leaves Nates side because he takes his job as butler seriously (sort of).

Jibanyan
Whisper and Jibanyan are both found around Nate very often so they end up interacting with each other a lot. It is safe to say that Whisper and Jibanyan are friends.

Abilities and Powers
Keita can access/change his Yokai Watch by sticking his hand into Whisper's mouth.

In the Sengoku Period, he can unleash a belch which, when in contact with someone, causes people to claim to know about stuff they do not really know of, always striking a kabuki-like pose and exclaiming "There's no really denying it~!".

He can also go through walls and doors, referencing his ghost like appearance.

Name Origin

 * "Whisper" is the same as the English word whisper, which could be a play off of the term "ghost whisperer," a person who can communicate with spirits and the nonliving, or in this case Yokai. It could also be based on "wisp", the shape of his head comb and body, or the ghostly phenomenon "will-o'-the-wisp."