History Characters / NineHoursNinePersonsNineDoors

* TheDragon: While Nijisaki ''seems'' to be the most loyal of Gentarou's many goons in the Nonary Game project nine years ago, Kubota provided the means for the game to work in the first place by creating the RED and DEAD systems.

* MurderByInaction: He's given this option by Zero from the start who left him with detailed knowledge about how the bracelets interact with the [=REDs=], [=DEADs=] and the bombs inside of them, which includes a hint that he can choose to withold this information from the others and potentially trick them into dying. This winds up happening to the 9th Man because Snake wasn't able to share this information in time as well as the fact that he suddenly took Clover at knifepoint.

* BigBad: Plays with this in a surprising way: the current [[DeadlyGame Nonary Game]] is being run by Zero/[[SamusIsAGirl June]]/[[LoveInterestTraitor Akane]] and [[TheDragon her secretary]] Santa. As it turns out, they are actually {{Well Intentioned Extremist}}s trying to punish the four men responsible for the first game and to get Junpei to save June's life. Time travel loops and all that. So the actual Big Bad ends up being Ace, or rather, Gentarou Hongou, [[CorruptCorporateExecutive CEO of Cradle Pharmaceuticals]], creator of the original Nonary Game and murderer of past Akane, as the person who set everything into motion.

!!!Voiced by: Creator/RieTanaka (Japanese), Valerie Arem (English)

* BigBad: Played with. He's not Zero, but his actions in creating the first Nonary Game ultimately led to all the events that happen in the game, and he is the most evil character in the game. As well as this, he's the murderer in the present day Nonary Game, and his motives for committing them are far more heinous than those of Zero's for starting the Nonary Game.

* BlindMistake: Downplayed as he had honed his senses enough to recognise others by voice and can competently move around on his own, the one time his blindness screws him over in the plot is [[spoiler:him failing to recognise Santa as Aoi Kurashiki since he was going through puberty when they met during the first Nonary Game 9 years ago and wasn't able to connect the voices together until near the end of the game, which would've screwed up Zero's plans if he managed to put two and two together.]]

* WouldHurtAChild: He put eighteen children through experiments against their will, then put them in the deadly Nonary Game. Then in a moment of desperation, he viciously grabs June by the arm and throws her into the incinerator as a last-ditch attempt to activate her abilities. All the while he sadistically taunts her regarding her impending death.

* BigBad: Played with. He's not Zero, but his actions in creating the first Nonary Game ultimately led to all the events that happen in the game, and he is the most evil character in the game.

* {{Jerkass}}: The only "evil" thing he has actually done is taking Clover hostage so he can try to escape. His getting blown to bits as a result just shows you the game is indeed real and not a joke. Ironically, most of the other players were ''not'' rigged to blow up the way he did.

* GreaterScopeVillain: While Zero is the more direct antagonist of the game, it is Ace's actions in the past (and some in the present) that are the main catalyst for the game's premise and events.

* AdaptationalDumbass: Downplayed and only applies to one moment. In the ''Nonary Games'' port, when Junpei is using his BatmanGambit on [[BigBad Ace]] to trick him into revealing his prosopagnosia (to confirm his guilt in killing Nijisaki thinking he was Snake), Santa expresses slight confusion over Junpei's gambit. Disregarding the fact that he should already know what Junpei is doing and that he's one of the people who know of Ace's machinations, Santa never does this in the original DS version, showing that he's at least aware that it's a gambit.

* AdaptationalDumbass: Downplayed and only applies to one moment. In ''Nonary Games'' port, when Junpei is using his BatmanGambit on [[BigBad Ace]] to trick him into revealing his prosopagnosia (to confirm his guilt in killing Nijisaki thinking he was Ace), Santa expresses slight confusion over Junpei's gambit. Disregarding the fact that he should already know what Junpei is doing and that he's one of the people who know of Ace's machinations, Santa never does this in the original DS version, showing that he's at least aware that it's a gambit.

* FauxAffablyEvil: Downplayed. When he no longer uses the facade of a CoolOldGuy after his reveal in the Safe ending, he speaks in an unassuming tone of false politeness, even when he has committed reprehensible acts and no one trusts him anymore. However, this tone is ''completely'' unconvincing anyway since it's quite clear to everyone how evil he is by then.

* StarterVillain: While the BigBad is technically Akane as the true identity of Zero, her actions only happen because of Hongou, and both of them are also the first BigBad of the franchise that the player has to defeat.

* AllForNothing: All of his murders throughout the game are done to [[HeKnowsTooMuch protect himself from being exposed as the one behind the events of the immediate plot as Cradle Pharmaceuticals' CEO]], including his murder of Clover, since she realizes that he stole the [9] bracelet and he has to keep her mouth shut about him being the one who's actively killing everyone. In the Safe and True ending, he gets exposed by Junpei anyway, meaning that his efforts didn't help himself in the end.