Before E3 2013, the owner of the gaming site
Gematsu, Sal Romano, claimed to have received an email from an anonymous source claiming to know which
newcomers would be introduced at E3 2013. Initially doubting the veracity of the letter, Romano jokingly posted the list to NeoGAF as a "unlikely prediction". Among the predicted newcomers were an
Animal Crossing Villager;
Capcom's
Mega Man; the
female trainerfrom
Wii Fit;
Little Mac from
Punch-Out!!;
Nintendo's
Mii; and
Namco's
Pac-Man.
[5]
To the surprise of many observers, including Romano himself, the leak successfully predicted the reveal of the Villager, Mega Man, and female Wii Fit Trainer; the lattermost was especially considered surprising, as
Masahiro Sakurai himself stated that the character was one that "no one expected".
While Little Mac, Mii, and Pac-Man were not revealed at E3 as the email claimed, some observers believed Sakurai decided to postpone their reveal for various speculated reasons, and that the characters would be revealed later on. Little Mac was later revealed as a playable character, but some observers found these predictions less surprising than the previous ones, due to the fact that all three characters were significantly speculated.
A few hours before the
Smash 4-centered
Nintendo Direct, the leaker reportedly sent another email to Romano; the contents of the email continued to claim that Pac-Man and a Mii would still be playable, as well as adding predictions for
Shulk from Xenoblade Chronicles;
Palutena from
Kid Icarus: Uprising (tying in with
another rumor);
Chrom from
Fire Emblem: Awakening;
the Chorus Kids from Rhythm Heaven (referred to by their Japanese name of Chorus Men in the leak); and an unknown
Pokémon from
Pokémon X and Y. Toward the conclusion of the Nintendo Direct presentation,
Greninja, who made its debut in
Pokémon X and Y, was confirmed as a playable character.
A day before
E3 2014, Romano received another email from the leaker. The leaker continued to claim that Miis, Pac-Man, Palutena, Chrom, Shulk, and the Chorus Kids would be playable, while not implicating any new characters, but also stated that there are plans for post-launch character DLC, and that there was internal debate about keeping either
Ness or
Lucas, with the latter being "likely to get the cut". During the E3 Nintendo Digital Event of 2014,
Mii Fighter was confirmed as a playable character, as well as
Palutena, and
Pac-Man was confirmed later that day
[6], confirming all characters implicated in the original leak, and leaving only Shulk, Chrom, and the Chorus Kids of the subsequent leaks left to be announced.
While the first leak is now confirmed to have been wholly legitimate, the veracity of the subsequent leaks remains unclear. While the second leak accurately slated Palutena as playable, she was a character widely expected to be playable, due to Sakurai having worked on
Kid Icarus: Uprising and the presence of the "leaked" images that had been posted on multiple news sites. Additionally, while "Pokémon from
Pokémon X and Y" was technically correct, the leaker's inability to specifically state Greninja and only being able to do so with a vague blanket statement was scrutinised. The leaker also never implicated
Rosalina as being playable, and has never implicated anything outside newcomers that was later confirmed as correct, bringing doubt into the extent of the leaker's inside knowledge. The prevailing theories are that the leaker had legitimate information for the first leak, but made up predictions for the subsequent leaks, or the leaker had significantly outdated information. The latter is supported by the fact he could only refer to Greninja as "Pokémon from
Pokémon X and Y", when Sakurai confirmed that he decided on Greninja well before the release of
Pokémon X and Y (which was six months before the second leak and the Smash Direct), and the fact that only three of the original six were revealed at E3 2013, when the leaker initially said all of them would be. The leaker also just only brought up the Ness vs. Lucas debate at E3 2014 with a non-definitive answer about it, with it being highly unlikely that the roster wasn't finalised well before this, as the final few months of game development are typically devoted to balance tweaks and debugging.