Spoilerina

is a Wind-attribute Legendary Yo-kai of the Charming tribe.

Biology
A small pale-skinned Yokai with big black shiny eyes. She has big blue dot-style eyebrows and tiny blushed cheeks. Her hair is blue and entirely pulled back, with a giant flowered piece on each side of the head. She wears a dull white ballerina dress with yellow ruffles underneath, a white collar, and blue ballerina slippers that match the bow around the waist.

Spoilerina enjoys leaking information and spoilers, considering any attempt to avoid them as a challenge. The conclusions of movies are a personal favorite topic of hers. She often ends her words with "-erina" as a verbal tic. She even spoils her appearance in the game before you can even befriend her!

Spoilerina can Inspirit people by dancing above their heads. This causes them to leak information she wishes to broadcast, compelling her victims to go to any lengths to spread said information. Her Inspiriting ability even seems to extend to machines as she was seen manipulating the display of a road sign simply by dancing above it.

According to Whisper and herself, Spoilerina has spent centuries perfecting her art of spoilers.

Yo-kai Watch animation series
Spoilerina first debuted in Yo-kai Spoilerina at the end of Failian's segment, spoiling the story behind the rest of the episode. Later on in the episode, Spoilerina properly appeared in front of Nathan Adams as he was about to watch the movie Space Wars 3 and attempted to spoil the ending for him. When Nate refused and ran away from the cinema, preferring to miss the movie entirely rather than be spoiled, Spoilerina hounded Nate by Inspiriting other people around him so they would leak the ending to him. After Spoilerina affected both Whisper and Jibanyan, Nate summoned Wazzat and instructed him to wipe his memory if Spoilerina leaked the ending, but discovered that Wazzat had also become affected and tried to spoil the movie for him as well. Nate eventually resorted to hiding in his closet, but Whisper and Jibanyan forced him out by attempting to shout out the ending. At that point, Spoilerina admitted that Nate impressed her with his persistence in avoiding her spoilers, and gave him her Medal, promising not to spoil the movie. Despite this, Nate ended up spoiled by other moviegoers discussing the film, disappointing Nate for which Spoilerina was quick to disclaim responsibility. Whisper advises Nate to summon Wazzat again.

In EP127, it is revealed that Spoilerina, when she was alive, was a girl by the name of Rina Haruno. Rina was a novelist who is notoriously known for spoiling her own novel works, which earns her a nickname 'The spoiling Rina'. During a press conference for the announcement of her novel's movie adaptation, her publisher's editors, knowing her unprofessional behavior, turns off the electricity of the event hall. Rina, who was about to spoil the movie, tries to stand onto the table, but she slips and falls off of the event hall to her death.

Yo-kai Watch 2
Befriend the following Yo-kai to unlock Spoilerina in the Yo-kai Medallium:

Yo-kai Watch 3
Befriend the following Yo-kai to unlock Spoilerina in the Yo-kai Medallium:

Yo-kai Watch: Wibble Wobble
Befriend the following Yo-kai to unlock Spoilerina in the Yo-kai Medallium:

Yo-kai Watch Busters
Befriend the following Yo-kai to unlock Spoilerina in the Yo-kai Medallium:

YW 2:
Spoilerina's soul-The Yo-kai that has this will dodge attacks easily.

Etymology
"Netaballerina"/"Spoilerina" is a portmanteau with and "Ballerina".
 * In Spanish, "Chafarina" is a combination of "chafada" (Chaffed) and "bailarina" (Ballerina)

Trivia

 * She is the only Legendary Yo-kai known to directly tell the player how to unlock her in the main games.
 * As of Spoilerina's appearance in the anime, Nate would encounter all future Legendary Yo-kai in the same way normal Yo-kai are encountered.

In other languages

 * Italian: Rovinella
 * Spanish Chafarina
 * French : Déballerine