Character mistake: In the "Before Battle" segment before the fourth stage of Angel in the Ring part I, Angel says about the 'zombie doll' that "it's bad breath puts me in a bad mood", mixing up verb and possessive pronoun.
Character mistake: In the finale of the third part of the collaboration with Street Fighter V, the announcer Serina's sign-off line is "That's all from SERNIA."
Character mistake: In several instances, the objects you get from Summons are mislabelled (for instance, affinity boxes appear as "summon ticket").
Other mistake: In the Street Fighter collaboration, great care was placed replicating the Street Fighter II arcade selection screen, but the positions of the characters (originals and stand-ins) are all wrong.
Character mistake: In the King of Fighters 2002 chapter, after the defeat of her team, Mai Shiranui (segment "Road to the truth - before battle") shouts "No, Mr. King, I am mad." King is not a 'Mr', it's her fellow teammate and captain of the LADIES team since KoF 1994.
Other mistake: In the presentation screen of the New Year Event, Nakoruru's name is misspelled as "Nakolulu."
Other mistake: During the KoF 2002 storyline, multiple times (would be redundant to enumerate them) there is no proper distinction in the text formatting between what the main character thinks acting as narrator, and what he actually communicates to the other characters as in-world dialogue. For the most part with rare hiccups, in the previous parts of the Story Mode the distinction was clear, with the thoughts being enclosed between parentheses.
Other mistake: The example screen with the Time Attack results shows wildly unrealistic results - you can't clear 2-3 stages from enemies in 13 seconds, unless you use cheating programs. It takes longer than that just to walk from start to finish.
Character mistake: In the "Athena in Wonderland" quest, Episode 2 "Beautiful Cat Fighter?!", Kensou warns Cotton Tail Yuri about "That beautiful clothes" that she is wearing. Should be those, not that.
Other mistake: When you pull Terry Bogard in his King of Fighters XII version, his quote says "I don't know about 'legendary' means."
Other mistake: The quote you get when you pull Benimaru '99 from the gacha summon is "Don't go too rough on a beautiful lady." Benimaru is a cisgender man.
Other mistake: In the WWE event, Seth Rollins, Becky Lynch and co. face off against the female team. Yuri Sakazaki in the story uses lines (references to the Lilien Knights and disdain for cops) that are blatantly not written for her, but for the character of Bonne Jenet.
Other mistake: The picture icon used to display King of Fighters 95 in Story mode (stage selection, waiting screens etc.) is, of all the possible teams, of a team that the protagonist does not meet at all in that year. By contrast, KoF 94 shows Kyo Kusanagi's team Japan and KoF 96 the Boss team led by Geese Howard, those are logical choices the protagonist interacts with and have influence on the story - the Psycho Soldiers team is not even mentioned in KoF 95.
Character mistake: In KOF 94, Noah mentions before facing the female team that they have many supporters and that it will be like playing an away game, with the crowd in the stadium. The day of the match though, the battle does not take place in any stadium or arena.
Suggested correction: It's a simile. Noah is saying that everyone will be rooting against him.