TheHero is an OrdinaryHighSchoolStudent living in Tokyo with his mother. He receives the Demon Summoning Program in an email and discovers a remarkable talent for Summoning.
* AlternateSelf: The version of him that appears in ''VideoGame/ShinMegamiTenseiIVApocalypse'' [[spoiler:is actually a version of him that died during the ICBM attack on Tokyo. Defeating Stephen earns him the right at a second chance with his fate changed. Fittingly, as the very beginning of the franchise, he represents what many players are at the start of the game: Being able to choose your side, yet not knowing which one.]]
* {{Ambadassador}}: He can talk his way out of a ton of fights to avoid unnecessary violence, but can kick ass with the best with them the instant negotiations fail.
* BadassBaritone: Despite being fairly young, he is given quite the deep voice in the Diamond Realm DLC in ''VideoGame/ShinMegamiTenseiIVApocalypse''.
* BadassNormal: He can use swords and guns. No magic. Yeah, he can summon demons but they are more like HiredGuns. Plus, he's a completely ordinary human, [[LampshadeHanging lampshaded]] by the name lead artist Kazuma Kaneko gives him: [[MeaningfulName Futsuo]] means "Ordinary/Average guy".
* BadassInCharge: Leads the demons he subjugates, and is generally considered the party's leader. After the events of the game he founded the Valhalla district in Tokyo Millennium and helped to expand it alongside Cerberus and Madam.
* {{BFG}}: The strongest gun in the game that he can equip, the ''[[http://vignette2.wikia.nocookie.net/megamitensei/images/6/63/Megido_Fire_SMT1.jpg Megido Fire]]'', according to official art not only big, but appears to be meant to be [[HandCannon wielded one handed]].
* TheBeastmaster
* CanonName: In the official game guide, he's called "Kazuya".
* CoolHelmet: When equipped with the Dragon armor set in the game, [[http://images.wikia.com/megamitensei/images/4/40/Herofa.jpg according to some official concept-art]].
* DarkMessiah: In every path. Saving the world means destroying everyone who opposes your vision for it.
* DisappearedDad: His father never shows up or is even mentioned.
* DroppedABridgeOnHim: [[spoiler: Almost literally. After all he's been through he gets killed by a ''cave-in'' of all things, although supplementary materials reveal that he was the victim of an assassination that was then made to [[MakeItLookLikeAnAccident look like a cave in]].]]
* DumpStat: Any skill points invested in Magic are effectively flushed down the toilet.
* DyingAlone: [[spoiler:His body is found in a cave in the second game.]]
* EveryoneCallsHimBarkeep: Of course, you can make one for yourself in the original game, but [[spoiler: in IV Apocalypse's Diamond Realm DLC, he's just called TheHero.]]
* FirstPersonGhost: The other human party members are seen frequently, but the Hero is never seen. The only reason it's known he's even male is because he's seen on the cover. Averted on the Sega CD version.
* GunsAkimbo: He has two handguns holstered on his sides after the Apocalypse.
* TheHero: It's his title, natch.
* HeroesPreferSwords: In his appearance in ''VideoGame/ShinMegamiTenseiIVApocalypse'', he favours melee skills over gun skills (and being unable to use magic).
* HeroicMime: Never gets a word in dialogue.
* HelloInsertNameHere: As part of Megami Tensei tradition, the player decides the Hero's name at the beginning of the game.
* HollywoodToneDeaf: One method of getting Demons to join you is by having him sing to the demons, then the demons will do ''anything'' just so that he'll stop.
* HurtingHero: After [[spoiler:he finds out (from the horse's mouth no less) that his mother [[KickTheDog was devoured alive by a demon.]]]] It's worth noting that the demon says "Aw, what's with that face! Come on, there's no reason to be sad. [[spoiler:You'll see her soon enough... in my stomach! Until then, why don't you entertain me for a bit!! I hope you taste as good as she did!".]]
** Possibly his feelings over having to [[spoiler: kill the Law and Chaos Heroes, as they were his friends]].
** You don't never need to look for specific examples for this trope; the Hero's family is dead, the world just got bombed to hell, demons have taken over the remnants of Tokyo, and a grand total of ''one person'' doesn't want to kill him if he so much as blinks the wrong way. Badass or no, it's hard to imagine the Hero as a particularly happy person.
* IdiotHero: Averted, both in gameplay and story. While Intelligence is a fairly useless stat for his companions, it's incredibly useful for him as it greatly increases the success of demon negotiation.
* IHaveManyNames: A meta example. He's given the name:
** Kazuya in ''Shin Megami Tensei Character Profile: Steven Report I'',
** Sho in ''Shin Megami Tensei Final Story: Atlus Official Replay Novel'', and
** Futsuo in ''Kazuma Kaneko Complete Illustration Works'', [[MeaningfulName which translates to "ordinary guy"]].
** In ''VideoGame/ShinMegamiTenseiIVApocalypse'' he is simply called "The Hero".
** In universe, he's also called "The First Hero" in ''VideoGame/ShinMegamiTenseiII''.
* KatanasAreJustBetter: Pictured with one in concept art. He's usually shown wielding Kagutsuchi.
* KillTheOnesYouLove: No matter what path you take [[spoiler:both Law Hero and Chaos Hero die, and you have to kill at least one of them]].
* LikeADuckTakesToWater: [[BadassNormal He really dealt well with the fact he'd have to fight demons for the rest of his life, eh?]]
* LivingLegend: In ''Shin Megami Tensei II''. Not only did he help rebuild Japan after the events of the first game, but also has a statue of his achievement as the "First Champion" in the Colosseum.
* MagicallyIneptFighter: Unlike his companions and demons, he has absolutely no access to magic.
* MagneticHero: Gets several demons and allies over the course of the game. [[spoiler: Even in IV Apocalypse's Diamond Realm DLC, he can buff all your allies using Morale Boost.]]
* MommasBoy: He loves his mother dearly. [[BadassNormal It does nothing to stop him from being the most powerful human alive.]]
** Sadly, [[spoiler:[[KilledOffForReal when he returns from prison, a demon already killed and ate her]]]].
* TheMusketeer: Wields a sword and gun alternately. He can carry both in battle, but only use one at a time.
* NeutralGood: Canonically. He's of Light morality, and [[CuttingOffTheBranches the sequel is based on him choosing the Neutral Ending]]. [[invoked]]
** NeutralEvil: He's categorized as Dark-Neutral during his stint as a BonusBoss in ''VideoGame/ShinMegamiTenseiIf'' though.
* OneManArmy: Takes on some of the strongest demons of both Law and Chaos as equals.
* PowersAsPrograms
* {{Reincarnation}}: [[spoiler:Lilith believes he is Adam, and the Heroine is Eve]].
* ScarfOfAssKicking
* ShouldersOfDoom: Receives these when wearing the Dragon armor.
* WronglyAccused: Near the beginning of the game, he is arrested for the murder of a man killed by a demon.
* YouKilledMyFather: [[spoiler:What's that? You ate my mother?! PrepareToDie, Ama no Sakugami!]] And this is only the ''beginning'' of the game.

The Hero's loyal dog.
* ActionPet: After [[spoiler:the death of the Hero's mother]], Pascal will fight alongside his owner.
* CanineCompanion: The lovable companion of the main character.
* {{Leitmotif}}: [[http://www.youtube.com/watch?v=NLcXXz01Tn8 Pascal's Theme]].
* MeaningfulName: He is named for the Pascal Programming Language, which was itself named for Blaise Pascal, a French mathematician and philosopher.
** In the remakes, he was supposedly a gift from a [[VideoGame/MegamiTensei Nakajima]].
* TookALevelInBadass: After your mother dies and Pascal joins the party, you can fuse him with any demon to create Cerberus!
* UndyingLoyalty: Unlike all other high-level demons, Pascal-Cerberus can be controlled by a low-level hero due to his personal loyalty to you from when he was an ordinary dog.

The Heroine is the leader of an underground resistance movement against Gotou. Although she cannot use the Demon Summoning Program, she has incredible magic powers. She eventually becomes the main companion to the Hero.

[[spoiler:She saves the Hero, Law Hero and Chaos Hero from the end of the world by teleporting them to Makai and is killed in the Great Destruction. She is reincarnated years later and (incorrectly) declared the Messiah by the Messians, but is captured by Ozawa's forces and put under the control of the Psycho Diver, who (under coercion from Ozawa) implants a demon inside her mind that slowly consumes her from within. Her psychic cries for help damage the Hero during each Full Moon until she is rescued]].
* ActionGirl: A staple among the Heroines, though she stands out especially. Unlike most game's female leads, the Heroine is just as powerful as the Hero.
* BlowYouAway: Though her specialty are lightning spells, she learns Rimdora, effectively a zandyne equivalent in a game that otherwise lacks such spells.
* ColorCodedForYourConvenience: Feel like going for Law? No probs! She's got a lovely white and blue Templar cape. In a chaotic mood? Atlus has her decked out in a charming red and black combat suit under the cape. Neutral? Law and Chaos in Balance is the Neutral message in this game.
* CombatMedic: Can be utilized as such, though because she learns only the basic full-party healing spell, she's much more practical as SquishyWizard.
* CombatStilettos: A red pair.
* DamselInDistress: Though balanced out by the fact that male characters also end up in similar situations. After it occurs the second time she TakesALevelInBadass, even though she already was one.
* DependingOnTheArtist: Applies to all characters, but afflicts her especially.
* {{Deuteragonist}}: In both the senses that she is the second most prominent playable character, and also that her actions during the initial wave of demons serve as a catalyst for the events to come.
* HeroicSacrifice: Rescuing the male leads from TheTokyoFireball. [[spoiler: Doesn't stick.]]
* IHaveManyNames: A meta example. She's known as:
** Yuka in ''Shin Megami Tensei Character Profile: Steven Report I'',
** Aoi in ''Shin Megami Tensei Final Story: Atlus Official Replay Novel'',
** Futsuko in ''Kazuma Kaneko Complete Illustration Works'',
** Maki Takahara in ''Crimson Night: Shin Megami Tensei II TRPG Genesis Jumpstart Kit''.
* JourneyToTheCenterOfTheMind: Sends the Hero on one, [[spoiler: who later goes into her mind to destroy the demon possessing her]].
* LightEmUp: She learns Hama.
* MessianicArchetype: Subverted. The Messians think she's the Messiah, but [[spoiler: she's captured by Ozawa, and then abandons the role, which is taken up by Law Hero.]]
* [[NiceGuy Nice Girl]]: Quite. She's always polite and approachable. She saves all of you from certain death [[spoiler: and even at the cost of herself]].
* {{Reincarnation}}: [[spoiler:Twice over. She is implied to be the Eve to the Hero's Adam, and she is killed during the Great Destruction and is reincarnated again later.]]
** ReincarnationRomance
* ReluctantWarrior: At the end of the [[spoiler:Neutral Path]] she says that she feels bad about how the war between Heaven and Hell has caused so much death and pain.
* SilkHidingSteel: Kind, selfless, gentle, and ridiculously powerful.
* ShockAndAwe: Learns Zio spells, which aren't resisted by much other than zombies. An extremely useful school of magic to learn, as lightning spells can cause opponents to waste a turn being stunned.
* TheSmurfettePrinciple: The only human woman to join the party.
* SupportPartyMember: Even moreso than the Law Hero. She learns the most spells out of the three magic-using humans without a particular focus, meaning that she'll likely become the party's most valuable asset.
* UndyingLoyalty: No matter what path you take (Law, Neutral or Chaos), she's right there beside you.
* VagueAge: While the male leads are implied to be around high school age, hers is entirely up for debate. Considering that she was leading a resistance movement prior to the ICBMs hitting, it can be assumed that she is at least in her early 20s.
* YouGottaHaveBlueHair: Somewhat.
* ZettaiRyouiki: Grade A.

!Law Hero
A young man who meets the Hero while searching for his girlfriend (who coincidentally shares the name of the Heroine). He survives the end of the world and gravitates towards the message of peace broadcast by the Messians.

[[spoiler:He saves the Hero in a HeroicSacrifice and is reincarnated by divine power into the Messiah, TheChosenOne of the Messians. Although he begins as a kind and well-intentioned soul, his viewpoint is poisoned by the KnightTemplar angels until he becomes just as radical and unforgiving as they are. He dies in every route: slain by Chaos Hero in the Law route, and by the Hero in the Neutral and Chaos routes]].
* AlwaysSaveTheGirl: His main motivation at the beginning of the game is to rescue his girlfriend, who was kidnapped as part of an effort to capture the Heroine. [[spoiler: Unfortunately, by the time he reaches her, she's a [[OurZombiesAreDifferent Bodyconian]], and is [[SideQuest given the option to find an item]] [[MercyKill that will grant her eternal rest]].]]
* {{Bishonen}}
* BlowYouAway[=/=]MakeMeWannaShout[=/=]PsychicPowers: Learns Zan spells, which encompass all three.
* TheChick: To an extent. He values his humanity immensely, especially compared to the Chaos Hero.
* ChurchMilitant
* CombatMedic: Learns Dia spells.
* CrucifiedHeroShot: His introduction.
* DistressedDude: After he's [[spoiler:kidnapped by Nebiros]] he becomes this.
* FamousLastWords:
-->[[spoiler:''"Is this what...Is this what God wanted...? I'm...going to die...again? Wasn't I chosen by God... to offer him everything...!! So that's it...Now I see I was nothing but a sacrifice. Nothing but a pawn to... accomplish God's ends... To be discarded at any time..."'']]
* HeelRealization: [[spoiler:After you deal him a mortal wound on the Neutral path]].
* HeroicSacrifice: The first time he dies, he sacrifices himself to save the Hero.
** LastStand: [[spoiler:If you choose to reject Law]].
* IHaveManyNames: A meta example. He's given the name of:
** Yuji in ''Shin Megami Tensei Character Profile: Steven Report I'',
** Toshiki in ''Shin Megami Tensei Final Story: Atlus Official Replay Novel'', and
** Yoshio in ''Kazuma Kaneko Complete Illustration Works'', [[MeaningfulName which translates to "good man]]".
* KnightTemplar: Becomes this later in the game.
* LawfulStupid
* LightIsNotGood: His [[spoiler:Messiah]] form is that of a young man in a pope outfit.
* LogicalWeakness: His ideology focuses on order and strength through unity. [[spoiler: This means that, unlike Chaos Hero, he isn't focusing on developing his own personal power. If it comes to a fight between the two, Chaos Hero annihilates him.]]
* MessianicArchetype: Complete with dying and being resurrected by God. [[spoiler:Subverted in that he is never the savior of mankind in any path, dying before he can assume that role]].
* NiceGuy: Before he becomes a Messiah he was very kind, sympathetic towards others, and the peacemaker of the group.
* StupidSacrifice
* UnwittingPawn: His [[spoiler: FamousLastWords are all about him realizing this]].
* WellIntentionedExtremist
* WeUsedToBeFriends: If you do not follow him onto the Law route, your differing ideologies lead to you coming to blows with him.

!Chaos Hero
A young and reckless gang member who is first met while he is being beaten up by Ozawa. Although he talks big, he is cowardly and wishes for the power he does not have.

[[spoiler:He survives the end of the world and eventually decides to fuse himself with a demon, gaining incredible power and ditching the Hero. He then joins up with the Gaian armies in his pursuit of more power, though remains somewhat affable with the Hero. In the Law and Neutral routes he is slain by the Hero. In the Chaos route, he is killed when he greedily snatches a powerful artifact called the Devil Ring from the Hero, and is consumed by its power]].
* BadassLongcoat: An urban camo patterned trench coat.
* BodyHorror: After [[spoiler: fusing with a demon]].
* ChaoticStupid
* DeathByIrony: In the Chaos route, [[spoiler:he steals the Devil Ring from the Hero, but is consumed because he was too weak to control the ring's power]].
* DrunkOnTheDarkSide: He is far too pleased with the power he gains from [[spoiler:fusing with a demon]].
* EvilIsNotAToy: [[spoiler:He tries to steal the Devil Ring from you on the Chaos route, but proves too weak to handle its power. Bye-bye Chaos Hero.]]
* FamousLastWords
-->[[spoiler:''"...So, my end comes as well... In the end, I couldn't beat you, [Hero]. You always were a step ahead of me. And I thought that I had finally gotten power that surpassed God's too ...Was this all... just a dream...? A nightmare...? No... It was a good dream... Goodbye, [Hero]...''"]]
* FreudianExcuse: He's been bullied by everyone. THAT'S why he's so power hungry.
* FreudianSlip: "Now I have the power of a demon...!!! Now... Now no one will be able to pick on-DEFEAT me."
* {{Hypocrite}}: After acting as TheLoad to you for the first quarter of the game, he has the gall to abandon you after gaining demonic power because ''you would only "slow him down"''.
** In the English iOS release, however, he says it's because you and the Law Hero are unlikely to survive without fusing with a demon like him. So this may not be entirely accurate.
* {{Greed}}: [[spoiler:He steals the Devil Ring from you in the Chaos route out of a selfish desire for more power.]]
* IJustWantToBeBadass: His entire motivation is to gain more power so that nobody will pick on him.
* IHaveManyNames: A meta example. He's given the CanonName:
** Takeshi in ''Shin Megami Tensei Character Profile: Steven Report I'',
** Tetsuo in ''Shin Megami Tensei Final Story: Atlus Official Replay Novel'', and
** Waruo in ''Kazuma Kaneko Complete Illustration Works'', [[MeaningfulName which translates to "bad guy"]].
* {{Jerkass}}: He really doesn't develop past being a petty brat.
* MessianicArchetype: Averted. While he ''is'' the demon-fused hero of Chaos, he ''isn't'' anyone's savior or [[TheParagon paragon]], simply an exemplar of the ideology. His motives are purely selfish and revolve around developing more ''personal'' power, which fits right in with Chaos's main idea.
* PetTheDog: He remains affable with the Hero even after abandoning him, and even helps him on some occasions. [[spoiler:If you make the choice to side against him, he is upset but resolves to fight you anyway]].
* PlayingWithFire: Has Agi spells.
* {{Pride}}: He doesn't accept that there are challenges that he can't overcome, becoming a textbook lesson in the dangers of hubris.
* RoaringRampageOfRevenge: If you [[spoiler:refuse to kill Ozawa]].
* TookALevelInBadass: Once he fuses with a demon, his stats skyrocket.
* TragicMonster
* WeaponOfChoice: [[BodyHorror After the fusion]] he wields a [[KatanasAreJustBetter sweet katana.]]
* WeUsedToBeFriends: If you do not follow him onto the Chaos route, your differing ideologies lead to you coming to blows with him.

An alluring young woman aligned with Gotou who pledges eternal allegiance to the Hero. For this reason, she is incredibly jealous of the Heroine.

[[spoiler:Her true identity is Lilith, the biblical serpent that tempted Adam in the Garden of Eden. Believing that the Hero is the reincarnation of Adam, she wishes to be his partner so that they can create a new world together. She is killed by the Hero in the Law and Neutral routes, but steps aside in the Chaos route so that the Hero can be happy alongside the Heroine]].

For her trope list, see [[spoiler: Characters/ShinMegamiTenseiForcesOfChaos]].

The wheelchair-bound genius who created and distributed the Demon Summoning Program. He was also the inventor of a teleportation system that inadvertently opened a portal to the underworld, setting off the events of the game and the rest of the franchise. He thus makes several appearances in future games.

[[NoCelebritiesWereHarmed Bears absolutely no resemblance]] to Steven Hawking.
* GeniusCripple: Became crippled after he was attacked by a demon.
* GoneHorriblyWrong: Testing of his teleportation program randomly managed to rip a hole in reality that filled the world full of demons.
* IOweYouMyLife: Kazuya would be dead if he didn't have Stephen's demon summoning program.
* NoCelebritiesWereHarmed: Totally not Stephen Hawking.
* {{Reincarnation}}: [[spoiler:The Kikyo Amulet-catalyzed vision in the GBA/iOS Visionary suggests that he's the reincarnation of [[http://en.wikipedia.org/wiki/Abe_no_Seimei Abe no Seimei]].]]
* UnwittingInstigatorOfDoom: By way of ripping a hole to the demon world.

Commander of the Japanese Self-Defense Force who attempted a coup d'e tat.
* ArcVillain: He's the first leader of the forces of Chaos and the driving force behind a lot of what happens before the nuking of Tokyo.
* FullFrontalAssault: While he appears in his uniform in his video feeds, he's encountered wearing a fundoshi in his base.
* NoCelebritiesWereHarmed: Based off of Yukio Mishima who also attempted a coup d'etat and posed in fundoshi.

A {{Jerkass}} [[{{Delinquents}} gang leader]]. He turns out to have a remarkable talent for Summoning and allies himself with Gotou.

[[spoiler:He survives the end of the world and strikes a deal with the new demonic regime so he can rule over the district of Shibuya. After Chaos Hero fuses himself with a demon, he kills Ozawa out of revenge]].
* AssholeVictim: When he dies, you really can't feel sorry for him. Even the Law Hero doesn't register a complaint over [[spoiler: if the Chaos Hero kills him.]]
* {{Delinquents}}
* GangOfBullies: He leads one.
* HumansAreTheRealMonsters: Creates a safe haven in Shibuya, but given the intense fear his rule inflicts, it's not much better than the other districts save maybe Roppongi. He notably is the first in a trend of villains who appear throughout the mainline games: A human who proves to be as bad as, if not worse than, the demons around them, to the point where one or two main characters start going off the deep end.
* {{Jerkass}}
* KarmicDeath: [[spoiler:He beats up Chaos Hero before the end, and is killed by Chaos Hero as revenge in the post-apocalyptic world]].
* KnifeNut: His character art depicts him holding a butterfly knife behind his back. Not that he ever fights you himself, though.
* SchoolYardBullyAllGrownUp: AfterTheEnd.

See {{Characters/Shin Megami Tensei Forces Of Chaos}}.

!Old Man[=/=][[spoiler:Taijorokun[=/=][[UsefulNotes/{{Taoism}} Tai Shang Lao Jun]]]]
After demons begin to appear in the streets of Tokyo, the player can go to Inogashira Park and meet an old man [[CrypticConversation who speaks cryptically of the hero gaining great power]] and of [[CharacterAlignment a choice between Law and Chaos]]. He then conjures up a vision in which the hero, Law Hero and Chaos Hero fight against the devil summoner Douman and are soundly defeated. The vision ends and the old man tells the hero that he is too weak to fight Douman, but that they will likely fight again and that he must be careful.

After arriving in the post-apocalyptic world, the player can find the same old man in Ginza, where he will tell the player to return if no path forward seems possible. If the player then says both Echidna and Haniel, the old man will reveal a secret path to the otherwise inaccessible Cathedral.

Near the end of the game, as the player prepares to battle Archangel Michael or the Asura Lord/Ahura Mazda, the old man reveals himself to be [[spoiler:太上老君 - shortened in the AGTP translation to Taijorokun (it should be Taijo-rokun, or Tai Shang Lao Jun) and officially translated as Taishang Laojun]]. After both are defeated [[MultipleEndings (at the end of the Neutral path)]], he appears in the ending to comment on the risks that the plans of Law and Chaos posed to the future of humankind, and urges the player to help shape that future free of the influence of outside forces.
* BadassCreed: In the Neutral ending, on the need for a balance between Law and Chaos.
* {{Expy}}: Not of any specific person, but he is basically supposed to support Taoism, a belief based entirely on balance.
* NeutralGood: He's your ally in the Neutral path. [[invoked]]