Character mistake: During the events of Angel of the Ring, in several dialogues Ralf, who is a Colonel and is called as such in said dialogues, takes orders from Heidern calling him "Captain." Heidern's correct rank in the storyline is "Commander."
Character mistake: In the "Before battle" segment before battle 5 in Angel of the Ring part I, Kula during her introduction spells at one point "peropero" with an extra p, "peroperop."
Character mistake: In the Countdown to Hope storyline, at the end of the Chapter EX, Ash Crimson tells Elizabeth post stage 5 "I'm sorry, but now I have this power now."
Other mistake: In the KOF99 story mode, the protagonist knows Kula Diamond's name before it is revealed to them.
Character mistake: In the first chapter of Night of the Yokai, after saving King and Ryo, Yuri talks to them about Yuri saving King and Ryo. Yes, in third person, which is not a quirk she shows in any other in-game dialogue.
Character mistake: During the trivia quiz in the Christmas event, Chang Koehan calls Shingo Yabuki "Shinho."
Character mistake: In the miniature city background (where you fight the Sentai versions of the Ikari Warriors and many others) a billboard on top of a building has the wrong logo, with "King Of Fighter", instead of FighterS.
Revealing mistake: Rudy's "Judgment of Glory" Finisher uses a special background of distant mountains and cliffs. Sometimes (in particular during Mecha Goenitz's challenge) part of energy/fire or even whole enemies get in front of the superimposed image, casting shadows on it like a cheap theater background.
Other mistake: The description of the Memory item says; "It can be used for different a Fighter's awakening."
Bug: The Festival Idol version of Athena Asamiya in the Advent Dungeon acts weird when hit through her Super moves; she keeps throwing combos for the whole duration of the Super even if you successfully Stun her (and the Stun animation is playing), and when you KO her she just shows up lying on the ground instantly without falling.
Other mistake: Amongst the various generic enemies you can face, there are construction workers with a "New York City" print shirt. The character model mirrors when they face left, including the writing on the shirt.
Plot hole: The KoF97 story mode starts with a double flub; Serina announces that the opening matchups for KoF96 have been announced (wrong year), and in the background there are big screens showing, amongst the other characters, also Ash Crimson, a character that won't enter the saga until 2003.
Character mistake: In the KoF98 saga, before meeting the Orochi Female team, the protagonist says to Mature "If it's between the Orochis, then you should surrender against Male Orochi Team, then." The repetition of "then" is an obvious mistake, but the meaning of the sentence itself is also inscrutable.
Character mistake: Commenting Kim's team matchup in KoF97, Chris from the New Faces Team says "an ex-convict and a Taekwondo instructor? Sounds like a tough match." He should say "Two ex-convicts", since the team is made of 3 people, with one being Kim (the Taekwondo instructor) and the other two are the criminals Choi and Chang - it is probably a mistranslation.
