Specific games in the series:
- Devil Summoner: Soul Hackers
- Devil Summoner Raidou Kuzunoha
- Devil Survivor
- Devil Survivor 2
- Digital Devil Saga
- Persona Recurring
- Persona 2
- Persona 3
- Persona 4
- Persona 4: Arena
- Persona 4: Dancing All Night
- Persona Q: Shadow of the Labyrinth
- Persona 5
- Shin Megami Tensei I
- Shin Megami Tensei II
- Shin Megami Tensei III: Nocturne
- Shin Megami Tensei: Strange Journey
- Shin Megami Tensei IV
- Shin Megami Tensei IV: Apocalypse
- Tokyo Mirage Sessions #FE
Adaptations in other media
Recurring Characters (Major Groups):
- Forces of Law: YHVH, Satan, Metatron, Michael, Gabriel, Uriel, Raphael, Angel, Archangel, Principality, Power, Virtue, Dominion, Throne, Cherubim, Ophanim, Seraphim, Mastema
- Forces of Chaos: Lucifer, Beelzebub, Lilith, Astaroth / Ishtar, Asura, Mara, Tiamat
- Fiend Race: White Rider, Red Rider, Black Rider, Pale Rider, Trumpeter, Mother Harlot, Daisoujou, David, Alice, Ghost Q, Hell Biker, Matador, Sage of Time, Chemtrail, Plasma
Recurring Characters (Other):
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Abaddon / Apollyon
Abaddon / Apollyon
- "The king of the abyss that appears in the Book of Revelations of the New Testament. He controls locusts and plagues. He leads the seventh order of demons who appear at the sounding of the fifth trumpet on Judgement Day, when he will bring a horde of locusts to make people suffer. His name in Hebrew means "destroyer" and "endless pit." It's thought that his origins lie in the deification of the natural disasters caused by locust swarms."— Compendium info from Shin Megami Tensei IV
- Achilles' Heel: Creating a weapon using a piece of cursed metal obtained from a certain chaos god nullifies its healing powers.
- All Your Powers Combined: After Earth has consumed his fellow teammates in Digital Devil Saga 2, his Yaksa form becomes Abaddon and can now use his teammates' skills.
- Anthropomorphic Personification: The Psycho and regular Apollyons embody mankinds despair.
- Attack Its Weak Point: Aleph fights his heart in Shin Megami Tensei II
- Big Creepy-Crawlies: The Apollyon horde in Raidou Kuzunoha vs. King Abaddon.
- Blob Monster: Most of his depictions.
- Cave Mouth
- Fallen Angel
- Glowing Eyes of Doom
- Healing Factor: The Apollyons healing factor is so great it makes them Nigh Invulnerable.
- Instant Awesome, Just Add Ninja: His Devil Children design.
- Kick the Dog: In Shin Megami Tensei II, Abaddon tells Aleph that Michael promised to restore it as an angel if it swallowed Valhalla District. It's Blatant Lies.
- Our Angels Are Different
- Recurring Boss: Apollyon and Psycho Apollyon are fought many times near the end of Raidou Kuzunoha vs. King Abaddon.
- Skippable Boss: In Shin Megami Tensei IV he appears as a boss in a New Game+ quest where he's attacking a pack of Manticores. The Manticores can be defeated without ever fighting him.
- The Heartless: What the Apollyon specifically the Psycho Apollyons are.
- Those Two Bad Guys: With Fenfir in the Devil Children anime.
- Womb Level: in Shin Megami Tensei II, Aleph gets to explore his innards after Abbaddon eats Valhalla.
Amaterasu and Susano-o
Amaterasu and Susano-o
- "The Japanese goddess of light. She is one of the leading deities of Takaamagahara, the land of the Amatsu gods. A deification of the sun, she also governs life. It is said she was born from the left eye of Izanagi."— Amaterasu's compendium info from Shin Megami Tensei: Strange Journey"A god of Japanese legend, born along with Amaterasu and Tsukuyomi. He was cast out for lewd behavior, but redeemed himself with heroic deeds like slaying Yamata-no-Orochi."— Susano-o's compendium info from Persona 3
- Amnesiac God: In Strange Journey, Amaterasu appears under the guise of Kinmamon in Sector Eridanus in the Schwarzwelt. She appears to be lost and confused, drawn to the powers of the land by her nature as a mother goddess. The Schwarzwelt's powers were trying to incorporate her into the group of the Demon Mothers, and she wound up talking senseless gibberish in a corner on Eridanus until the Protagonist, with the aid of Ame no Uzume and Futotama shone a magical mirror upon her, waking her up from her delusional dreams and allowing her to leave the dimension with her caretakers.
- Badass: Susano-o in Devil Summoner: Raidou Kuzunoha vs. The Lone Marebito where the guy ends up facing some of Abe Seimei's most powerful demons and even after losing his arms during the battle continues to fight on and crush the demon he's facing.
- Character Filibuster: After freeing the Shinto gods in II, Amaterasu proceeds to go on a fairly lengthy rant about how the vain, grasping "Hebrew gods" (literally Hebrew gods, straight from the Japanese script, not an invention of Aeon Genesis) tricked the Kunitsukami into locking the Amatsukami and then turned on the Kunitsukami themselves. To anyone from Abrahamic Religions, it comes across really uncomfortably.
- Cutlass Between the Teeth: Susano-o uses his sword this way once his arms are cut off in Raidou Kuzunoha vs. The Lone Marebito.
- Foreshadowing: Susano-o appears briefly in Devil Summoner, haunting a old shrine and warns that the seal is getting weaker before disappearing.
- Fusion Dance:
- In Nocturne, Amaterasu is a special fusion only being able to be summoned by Sacrificial fusion of Take-Mikazuchi and Yatagarasu, using Ame-no-Uzume as the sacrifice.
- In IV, Amaterasu is a special fusion of Yatagarasu, Futotama, and Ame-no-Uzume, unlocked after a demon conversation quest is completed.
- Gender Bender: Susano-o takes the form of a young girl in Megami Tensei II until he remembers his true form.
- Even Bad Men Love Their Mamas: In Devil Survivor Overclocked Susano-o's backstory is that he wanted to see his mother Izanami, and then his father Izanagi exiled him for wanting to see her.
- Heroic Build: Susano-o's Soul Hackers design is surprisingly ripped.
- Holy Halo: Susano-o has one in Megami Tensei II.
- Light 'em Up/Playing with Fire: As a natural extension of Amaterasu's mastery of the powers of the sun.
- The Power of Hate: The rage Honda feels about being unable to escape the lockdown and meet his son in Amane's 8th Day summons Susano-o.
- The Power of Love: The group speculates that he is actually summoned by his ability to sympathize with Honda who wished to see his loved one. Along with possibly the feelings of his son seeking to see his father.
- Power Of The Sun: Amaterasu's power as a God of the sun.
- Physical God
- Relationship Values:
- In Persona 4, Konohana Sakuya will evolve into Amaterasu once the High Priestess Social Link reaches Rank 10, making Amaterasu the ultimate Persona for Yukiko Amagi. Likewise, Jiraiya will evolve into Susano-o once the Magician Social Link reaches Rank 10, making him the ultimate persona for Yosuke Hanamura.
- In Devil Survivor 2, Amaterasu is a Unique demon that doesn't require a particular fusion combination to create. Instead, the player has to achieve a Fate level of 5 with Otome Yanagiya before it is available. Once this has been achieved, it is unlocked for fusion on all subsequent runs as long as the player imports his/her save. Susano-o is also a Unique demon that must be unlocked by getting to Fate level 5, but with Keita Wakui instead.
- Rule of Symbolism: In Strange Journey, Amaterasu also comments she was drawn into the Schwarzwelt, with the feeling she was supposed to be one of the mothers.
- Sealed Good in a Can: In II, with the rest of the Shinto Gods.
- Side Quest: (IV) Futotama, found at the Meiji Shrine in Shinjuku, explains that Amaterasu was sealed away and asks that the player obtain the three imperial regalia from demon's domains around Tokyo to revive her. She bestows the Torifune's Shrawl upon resurrection.
- Signature Move: Amaterasu has Godly Light in Nocturne.
Aniel, Kazfiel, and Samael
Aniel, Kazfiel, and Samael
- The angel of beauty. His name means "the grace of God." He is commonly associated with Venus, and thus with Ishtar as well.His duty is to fasten the bonds of love between young men and women.— Aniel's compendium info from Shin Megami Tensei: Strange JourneyThe sinful "angel of the oath." His original name was Biqa, meaning "good person." He attempted to coerce Michael to tell him the sacred name of God, but was denied. After the Fall, he was given the name Kazbiel, "he who lies to God."— Kazfiel's compendium info from Shin Megami Tensei: Strange JourneyA mysterious angel whose name means "poison of God." He is often depicted as a serpent.Opinions differ on whether he is fallen or not, but either way, he is linked with death.— Samael's compendium info from Shin Megami Tensei: Strange Journey
- Amazing Technicolour Population: Aniel and Kazfiel are blue.
- Battle Butler: Aniel acts as a Steward for the Four Archangels in Shin Megami Tensei IV. He calls for Sister Gabby whenever Flynn does Law Challenge Quests on the Law Route and is the one who summons Seraph in the quest "Four Wings, Four Heads".
- Bonus Boss:
- Kazfiel was a optional boss fight in Shin Megami Tensei I.
- In Strange Journey, both Aniel and Kazfiel were optional boss fights in the three EX Missions Before The Holy Battle. The third one being a Dual Boss against the two. Samael also appears, but is more of a random boss due to the mechanics of finding hidden demons in the game.
- In IV Kazfiel is a boss faced in the Challenge Quest "Escorting Your Comrade", where he is the last angel preventing you from helping Navarre escape from Mikado.
- Boss In Mooks Clothing: Samael is one in Digital Devil Saga 1, boasting over a thousand HP and 666 MP. He's also this in Strange Journey as one of the Enemy Search C demons, boasting 999 HP (the most non-bosses/Fiends can have).
- The Dragon: Samael is this to Hikawa in Shin Megami Tensei III: Nocturne. Anael along with Sariel are ones to Metatron in Devil Survivor.
- Elemental Powers:
- Blow You Away: Aniel in Demi Kids and Kazfiel in Strange Journey and IV.
- Casting a Shadow: Samael
- Light 'em Up: All three have known light spells at least once throughout the series.
- Non-Elemental: Whenever they known Mystic or Almighty skills.
- Shock and Awe: Aniel in Strange Journey and IV.
- Standard Status Effects: Samael has God's Curse as his Signature Move (which also falls under Secret A.I. Moves) in Nocturne. Samael knows Vanity, which randomly inflicts status effects, in Digital Devil Saga, along with Stone Gaze and Revelation which inflict stone and mute. Finally in Shin Megami Tensei IMAGINE he can learn God's Malice, which inflicts ailments and does almighty damage.
- Fallen Angel: Samael is Fallen in some games. Kazfiel's name after the Fall is Kazbiel, "he who lies to God".
- The Grim Reaper: Kazfiel and Samael are both Angels of Death. Anael's design is a Grim Reaper in Devil Survivor.
- I Have Many Names: Aniel is also known as Anael, Haniel, and Hanael. Kazfiel is also known as Biqaiel, Kazbiel, and more.
- Knight Templar: Samael in Digital Devil Saga 2, when fought in the Sun.
- Light Is Not Good
- Love Angel: Aniel fastens the bonds of love and is associated with Venus, the planet associated with love. This also explains his design as a young male cupid in II.
- Our Angels Are Different: Aniel and Kazfiel are usually depicted as six winged blue skin humans without legs and doll arms, while Samael is depicted as a Dragon or Winged Serpent. Aniel has also been depicted as a Cupid, Grim Reaper, and horned humanoid.
- Our Dragons Are Different: Samael, natch.
- Palette Swap: Aniel and Kazfiel were different colored versions of each other in Shin Megami Tensei I and Majin Tensei, Samael is one of Azazel in Majin Tensei II, and Aniel as Anael is one of Sariel in Devil Survivor.
- Weaksauce Weakness: Half the games Samael appear in he has a weakness to Light. The other half has him No Sell it.
- Western Zodiac: Aniel represents Capricorn. This plays a part of his design and theme with the other Zodiac Angels in Demi Kids.
- You Shall Not Pass: During Shin Megami Tensei IV Both Kazfiel and Aniel attempt to prevent Flynn from going further into Purgatorium and eventually Mikado, repeating the same words all the other angels say.
Belial and Nebiros
Belial and Nebiros
- One of the 72 demons of the Goetia, invoked by King Solomon. He leads 50 legions of demons as their chief.He is said to appear before his conjurer as two beautiful angels in a chariot of fire. His name means "worthless" and he is cunning, causing the fall of Sodom and Gommorah, as well as persecuting Jesus Christ.— Belial's compendium info from Shin Megami Tensei IVThe general of Hell. He keeps watch over other demons.One of Hell's greatest necromancers, he can control souls and corpses.— Nebiros' compendium info from Shin Megami Tensei IV
- Amazing Technicolor Population: Nebiros had a redesign, much like Jynx, and this trope was the result.
- Ars Goetia: Both of them.
- Badass Longrobe: Nebiros.
- Big Damn Heroes / Big Damn Villains: In Raidou Kuzunoha vs. The Lone Marebito the two as the Red and Black Count save Raidou from Alice, return his weapons and demon tubes, and a key back to earth before they head into their home with Alice.
- Body Surf: Nebiros does it in Devil Survivor 2.
- Bonus Boss:
- The Cameo: Alice carries dolls that resemble their human forms in Shin Megami Tensei II.
- Casting a Shadow: Nebiros.
- Demoted to Extra: In Shin Megami Tensei IV, Belial is fought as a boss in Lucifer Palace, the final dungeon in the game on the Neutral and Law routes. However, Nebiros is simply a random encounter found earlier in the game.
- Does Not Like Shoes: Nebiros.
- Dual Boss: In Devil Survivor, Belial works with Beldr in part of Babel's Boss Rush. He attacks 3 times every turn, he's strong against everything except ice, and has about 3000 hp.
- Facial Markings: Nebiros has these in the form of a skull.
- Fate Worse Than Death: In Shin Megami Tensei I, Nebiros and Belial turn the people of Roppongi into zombies to make them Alice's "friends".
- Four-Star Badass: Nebiros is the General of Hell.
- Graceful Loser: When you defeat him in Devil Survivor, Belial congratulates you and comments that humans are more qualified for the Throne of Bel than demons are.
- Has Two "Uncles": They both raised and cared for Alice.
- I Have You Now, My Pretty: Belial does this to Haru in Devil Survivor.
- Light 'em Up: Nebiros.
- Love Makes You Crazy: In Shin Megami Tensei I, they admit they are holding Alice sort-of alive against God's wishes; they also indicate her soul may have been bound for Heaven, but considering the local version of God, they may have a very good reason for keeping her in that state.
- Necromancer: Nebiros is one.
- Palette Swap: Nebiros gets one in the form of Lich.
- Papa Wolf: Mess with Alice and you will feel their wrath.
- Perverse Puppet: Nebiros uses a puppet whenever he fights.
- Playing with Fire: Belial.
- Prongs of Poseidon: Belial.
- Rage Against the Heavens: According to Raidou Kuzunoha vs. King Abaddon, they have adored Alice since she was just a normal girl. It's her sudden death that makes them call God a heartless bastard, since Alice surely would like to enjoy life more.
- Sidequest: In the Raidou Kuzunoha series, they have sidequests that revolve around Alice.
- Signature Move: Sodom's Fire /Fire of Gomorrah for Belial, Necromancy for Nebiros.
- Those Two Guys / Those Two Bad Guys: Especially in the Raidou games.
- Weapons That Suck: In Shin Megami Tensei I, the Red Baron (aka Maou Belial) is unbeatable unless you have "the gushing jar". Then it will just suck him up.
Brahma, Shiva and Vishnu
Brahma, Shiva and Vishnu
- Strange and powerful demon that defies description and challenges the imagination.— Brahma's compendium info from Demi KidsThe Hindu creator and destroyer of the world. Along with Vishnu, Shiva is one of the most revered gods in the Hindu faith.He purified the world through destruction and then reconstructs it. Though he uses his destructive force towards demons, he grants blessings to believers. There are various depictions of Shiva, but the common version has four arms, one face, and three eyes. His weapon is a trident of light, and his third eye is said to be able to set the world ablaze.— Shiva's compendium info from Shin Megami Tensei IVOne of the Trimurti of Hindu mythology. He is known as the Preserver. Whenever the earth is in danger it is said he will appear on earth as an incarnation known as an avatar.— Vishnu's compendium info from Shin Megami Tensei: Soul Hackers
- A Load of Bull: Shiva's steed Nandi.
- Amazing Technicolor Population: Shiva and Vishnu. Brahma was one in Majin Tensei II.
- Big Bad Duumvirate: Vishnu leads the Polytheistic Alliance in Shin Megami Tensei IV: Apocalypse in his Krishna avatar with Miroku and Odin.
- Bonus Boss:
- Digital Devil Saga 2:
- Vishnu appears as an optional boss in a room opposite that of Shiva's. To meet with Vishnu, the Embryon must first prove their worth to his avatar Narasimha and obtain his sword. Upon meeting the Seraph, Vishnu states that it has been a while since the dharma (righteousness) has vanished from peoples hearts and been replaced by adharma (wickedness) as it has now. He claims that he must cleanse this impurity by destroying Seraph and the others, and the only way to change his mind is for them to show the strength of their dharma. In Vishnu's room is the bullet Pandemonium, the strongest in the game, and defeating him infuses the Nandaka with his power, unlocking the God of Light Mantra.
- In order to fight Shiva, you need to get the Pinaka from Parvati. After that, he can be found on the 3f of the 6th layer, behind the door next to the restoration node before you fought Meganada.
- Persona 2: Sakya appears as a randomly appearing boss in the second door of the Abandoned Factory. Defeating him causes him to drop his Material Card, Buddha's Words, allowing him to be fused in the Velvet Room.
- Devil Survivor 2: On Saturday if one does not go down Daichi's route then they will face Shiva in the battle against Hinako and Jungo. It's possible to defeat them without having to fight Shiva, who leaves when Hinako is defeated.
- Digital Devil Saga 2:
- Combination Attack:
- "Trimurti" from Persona 2 by the personas Shiva, Vishnu, and Brahma. It will KO all non-boss enemies. It is more broken since these three can be obtain far earlier than Lucifer and Satan and do not require the insane MP consumptions. This only applies to Innocent Sin since it was nerfed in Eternal Punishment.
- Shiva, along with his wife Parvati, grants the accessibility to the fusion spell Ardhanari in Persona 3.
- Demoted to Extra: Brahma. Even Digital Devil Saga, which focuses on Hinduism, only references Brahma through the appearance of the final boss Brahman, a different, yet related entity, while Shiva and Vishnu are tied for third strongest optional boss in the game.
- Eye Beams: Shiva's Pasupata is a Wave Motion Gun shot out of his third eye.
- Fusion Dance:
- The traditional method of fusing Shiva from Barong and Rangda originated from the first game. It should be noted that Shiva is the highest recruitable Tenma, and that Shiva cannot be fused with any other demons - the game won't even create a slime from fusion, it literally will not allow any fusions.
- Ardha can only be created by fusing Shiva and Parvati.
- Harihara is the fusion of Shiva and Vishnu in Hindu lore and the Atma Avatar of Jenna Angel.
- God In Avatar Form: The Avatars of Vishnu known as Kalki, Hayagriva, Krishna, Rama, Narasimha, and Sakya have appeared as demons through the series, with Krishna getting the most prominent role through his appearance as a main antagonist in Apocalypse. Brahma is also believed to be the avatar of Brahman, though the series treats them as different beings.
- Horse of a Different Color: Nandi is a steed for Shiva, while Hamsa is one for Brahma.
- Humble Hero: Sakya speaks humbly to the party in Persona 2 during Tatsuya's scenario.
- Kung-Fu Jesus: Sakya
- Infinity+1 Sword: Vishnu is the ultimate Emperor Persona, at level 86. To obtain Vishnu, you need to obtain a spell card from every demon in the game.
- Long-Haired Pretty Boy: Krishna
- Magical Flutist: Krishna often is seen with a flute in his hands. Since he's an avatar of Vishnu, he has impressive magical powers.
- Multiarmed And Dangerous
- Optional Party Member: Vishnu will join the party in Shin Megami Tensei I to defeat his old archrival, Ravana, if the player is following the path of Law.
- Panthera Awesome: Narasimha.
- Petting Zoo People: Narasimha and Hayagriva.
- Physical God
- Suspiciously Similar Substitute: Kalki replaces Vishnu, which is absent in Shin Megami Tensei II, symbolic of the apocolypse.
- White Stallion: Kalki's horse. Significant in that is it ridden upon by the harbinger of the apocalypse
- The guardian hound of Hades in Greek lore. It traditionally has three heads and a snake's tail.It was born from Typhon, the giant of wind, and Echidna, the mother of monsters.— Cerberus' compendium info from Shin Megami Tensei IV
- Bragging Rights Reward: In Shin Megami Tensei III: Nocturne, Cerberus first appears at the Burial Chamber in the Amala Labyrinth's First Kalpa, where it will challenge Hito-Shura to prove his worth as a demon by quickly vanquishing once more those that he has once killed in the Vortex World using the Black Visor. After meeting all the requirements and starting a new cycle, meeting with Cerberus again in the same location will have him take Hito-Shura to his master's resting place instead at the Tomb of Yomi in the hidden 666th floor, where Hito-Shura will receive an extra Press Turn.
- Crutch Character:
- Shin Megami Tensei I: Because of Pascal's former loyalty towards his master passed on to him by the fusion, Kerberos can be used even when his level far surpasses that of the Hero—something that generally is impossible. He aids him in only one battle however, disappearing through a teleporter after a boss fight. He later rejoins in Tokyo Destiny Land provided you give him a Golden Apple.
- Shin Megami Tensei II: Cerberus first joins you on the quest Madam gives you: Find and bring back Hanada. After the quest, he leaves the party. Later when Valhalla is swallowed by Abbadon, you will find him at the former entrance to the city from the underground passageway. He joins your party shortly after meeting him for the 2nd time.
- Dummied Out: Using a debug code in Persona 3 will allow you access to another Cerberus Persona that knows Great Seal and some Fusion Spells. (Using Great Seal will freeze up the game) When summoned, the white, single-headed lion-esque version appears, suggesting that it's the likeness that may have been planned for official use in the game but later altered, being used instead as a base to create the Beast series shadow.
- Fusion Dance: The result of one in Shin Megami Tensei I.
- "Get Back Here!" Boss: In a Challenge Quest from Shin Megami Tensei IV where he always flees after his Hell Horde takes a certain amount of damage. He fights for real after being chased down three times.
- Heel–Face Turn: The Cerberus from Tokyo Revelation was a demon sent to kill the Protagonist by Ose's dragon, Gagyson. The Monk who defeats him convinces him to protect the protagonist in the name of his master Hecate instead.
- The Horde: Cerberus is leading a Hell Horde in Shin Megami Tensei IV, which is made of Fire related beasts.
- Horse of a Different Color: Acts as Masakado's flying steed in Tokyo Revelation.
- Legacy Character: Averted, the Cerberus that appears in Shin Megami Tensei II is the same one that appeared in the first game.
- Playing with Fire
- Shout-Out / Mythology Gag: Cerberus takes you to his master's grave in the land of Yomi in Nocturne. This is a reference to Akemi Nakajima who is also the reincarnation of Izanagi.
- Tragic Monster: in Digital Devil Saga 1, as a result of Lupa not eating flesh when needed to.
- You Don't Look Like You/Mythology Gag: He typically appears as a white dog with a lion-like mane, unlike the Cerberus of Greek mythology. However, the Atma Avatar of Lupa and Koromaru's Persona are three-headed. The reason why Cerberus is usually portrayed with one head is not because of graphical limitations (somewhat) but because that's how he was portrayed in the original Digital Devil Story novel.
- A phantom copy of a living being. The name comes from the German phrase "double goer" Doppelgangers are a sign of bad luck. Often, others see your doppleganger from afar, but it is said you may also see your own doppleganger right before you die.— Doppelgänger's compendium info from Shin Megami Tensei: Strange Journey
- Attack Reflector: Doppelgangers usually are resistant to physical skills of all kinds, usually being capable of reflecting all physicals attacks out-right. This could be attributed to their own nature as shadow copies of the protagonist, were all the harm done to them goes back to the protagonist, for being one and the same.
- Face Framed in Shadow: Many of its depictions tend to have its face covered in shadow, which is fitting as it retains this in many forms.
- Slasher Smile: The other thing distinguishing the Doppelgänger from the person it's impersonating.
Long, Gui Xian, Feng Huang, and Baihu
Long, Gui Xian, Feng Huang, and Baihu (The Four Gods)The Four Gods are the central figures of an ancient Chinese system of astrology and geomancy which was imported to Japan and absorbed into Onmyodo mysticism, among other beliefs. In this system, there were 28 'star houses' (constellations) which ran the circumference of the sky. The Heavenly Emperor divided the sky into the northern, southern, eastern, and western quadrants, each with 7 star houses; each quadrant was ruled by a divine beast.
- All Your Powers Combined: In several games in the series (including Strange Journey, Shin Megami Tensei IV, and Persona 4), using all four of them in a Special Fusion unlocks Huang Long/Kohryu, one of the strongest demons in the game that it appears in.
- Bonus Boss: After the party has reached the top floor of the final dungeon in Digital Devil Saga and if the player returns to the bottom, a Tribe member will notify Serph that several enemies have occupied old areas, later to be called the Four Guardian Beasts.
- Evolutionary Levels:
- In Nocturne, Gui Xian can be obtained by evolving Nozuchi.
- The player can get Seiryu in Nocturne by leveling a Mizuchi to level 40 or until it evolves. It has the ability to drain Ice attacks and null Expel. However its weakness is Fire.
- The Four Gods
- Multiple Head Case: Gui Xian/Genbu
- Panthera Awesome: Baihu/Byakko
- The Phoenix: Feng Huang/Suzaku
- Our Dragons Are Different: Long/Seiryu
- Sadly Mythtaken: The vermillion bird that represents the South is called Zhu Que. The Feng Huang is something completely different, but the games confuse them almost every time they use their Chinese names.
- Turtle Power: Gui Xian/Genbu
Bishamonten, Jikokuten, Koumokuten and Zouchouten
Bishamonten, Jikokuten, Koumokuten and Zouchouten (The Four Heavenly Kings)Four powerful Buddhist devas: Bishamonten, Lord of the North, Jikokuten, Lord of the East, Koumokuten, Lord of the West, and Zouchouten, Lord of the South, under the service of Taira no Masakado.
- Affably Evil: The Four of them are friendly fellows while being part of the Chaos faction in Shin Megami Tensei: Strange Journey.
- Amazing Technicolor Population
- Barrier Maiden: The Four act as a barrier between the physical and demon worlds in Devil Survivor.
- Boss Battle
- Bonus Boss
- In Shin Megami Tensei III: Nocturne, Bishamonten appears first at the Temple north of Ueno Park after finding the Kimon Sphere, and second in the Bandou Shrine. After the first fight, the player will receive the Gundari Magatama, and Bishamonten will tell the player to collect all of the Magatama and find him again with his master. After aquiring the Lord's Blade after collecting all 24 Magatama, the player can access the Bandou Shrine and fight the four Devas for the right to receive the Masakados Magatama.
- In Shin Megami Tensei: Strange Journey, you can fight them if you satisfy their conditions.
- Dual Boss:
- Skippable Boss: They will join the party in Shin Megami Tensei I without a fight if the protagonist is strong enough for them on the Chaos Path.
- Wake-Up Call Boss: Bishamonten in Devil Survivor. Not only is his fight the second with Rangda enemies (which Repel Physical, making Atsuro and Izuna completely useless), his Hassohappa (which can deal 1000+ damage to the entire party) makes it almost impossible to approach him unless you at least Null Phys. Not to mention he has (respawning) allies that can heal his massive HP stores (making Hassohappa hit worse). While most battles so far were almost all affairs where you mostly attack and exploit weaknesses, this one puts emphasis on defense using passive abilities.
- Bonus Boss
- Broken Bridge: you have to beat them on the Neutral or Law routes to access the Cathedral in Shin Megami Tensei I.
- Evil All Along: In Shin Megami Tensei IV the four of them appear to Flynn in a Neutral-only quest involving helping Tokyo. In Final they are revealed to actually be members of the Polytheistic Alliance and their challenge to Flynn becomes a Secret Test of Character for the Alliance Evil Plan.
- Four Is Death: This group is one of the trope namers, after all.
- Improbable Weapon User: Koumokuten uses an ink pen and scroll in Devil Survivor and Zouchouten uses a sutra made of pearls in Nocturne.
- Optional Party Member: On the chaos route of Shin Megami Tensei I, they will join the party if the protagonist is strong enough.
- Secret A.I. Moves: In Devil Survivor, the Four Heavenly Kings have their unique racial ability if you fight them as bosses, while the fusable versions are just regular Kishin.
- The Unfought: Jikokuten was dead before the events of Devil Survivor.
Jack Frost, sometimes commonly known as Jack, is the mascot of Atlus Co., Ltd. and he makes appearances in a number of Atlus games, primarily in the Megami Tensei series. Jack Frost's counterparts, also known his "brothers" are called Pyro Jack and Jack Ripper, along with many other varieties also appear in many games, some of which include Black Frost, King Frost, Frost Ace, Lucifroz, Mini Frost, Strawberry Frost, Lemon Frost, Demonee-ho, etc...
- As Long as There Is Evil: Humorously, Black Frost makes this claim if you use him in a fusion in Devil Survivor 2.
- The Beastmaster / Summon Magic: Raiho is able to summon Jacks in the Soulless Army and has improved enough to summon demons like Mahakala despite being at a lower level than him in King Abaddon.
- Berserk Button:
- In Strange Journey, do NOT call yourself a "hee-ho" around Jack Frost or Pyro Jack unless you want them to have a free turn.
- In the same game, calling Pyro Jack a mascot is a very bad idea.
- In Shin Megami Tensei IV, call yourself the main character and he tells you about how his father said to kill the main character. Free enemy turns ensue.
- In Strange Journey, do NOT call yourself a "hee-ho" around Jack Frost or Pyro Jack unless you want them to have a free turn.
- Beware the Silly Ones: Unlike a regular Frost and despite his appearance, King Frost is ruthless and his power unyielding. He is not friendly and likes to exercise his status as a king to even go so far as to consider his summoners as his subjects as well.
- Bonus Boss:
- Raiho is a optional Boss fight in both Soulless Army and King Abaddon. He can only be faced in New Game Plus in Soulless Army and a case file on the first playthrough onwards in King Abaddon. He also summons demons to help him.
- King Abaddon also has the Jack-san Five which are a group of four Black Frosts and one Jack Frost. They are creating noise pollution with their music and Raidou has to put an end to it.
- After Serph and company defeat Mick the Slug in Digital Devil Saga 1, King Frost takes the opportunity to reoccupy Coordinate 136 with his own demons. Upon reentering the castle, Serph encounters two Pyro Jacks fiddling away at a treasure chest. Having tried their luck, the Pyro Jacks turn to the party to find a suitable key within the castle promising that the treasure within is for Embryon to keep. It was however a lie. After the party retrieves the correct key, the Pyro Jacks run off with the treasure to present it to their king. To get back their spoils, the party ventures to the top of the tower to find King Frost sitting on the platform above the bed in the Princess' Bedchamber. Declaring that all possessions belong to him, King Frost decides to smite the party for their insolence. After a harsh struggle combined with the forces of his minion Jack Frosts, the party defeats King Frost and obtains the Ice Crystal.
- Throughout Digital Devil Saga 2, a Jack Frost may enter a battle and ask a series of questions. Answer 100 correctly throughout the game and you'll have the opportunity to fight said Jack Frost in the final dungeon.
- Breakout Mook Character: Jack Frost is the protagonist in Jack Bros. He, along with Pyro Jack and Jack the Ripper, have to make it back to the Makai world before midnight.
- Broken Pedestal: Played for Laughs with Raiho.
- Char Clone: Frost Ace is a Jack Frost who put on a mask in order to avenge... something. His outfit's design is based off of Char's, and the "Ace" in his name comes from this reference, as he's never actually shown piloting anything.
- Cute Little Fangs: Suitable for a mascot, they've got adorable little fangs.
- Drill Sergeant Nasty: Demonee-ho in SMTIV. He barks commands at the player, and calls him a maggot. Makes sense, as he is wearing a military uniform.
- Fourth-Wall Observer: Raiho. Constantly.
- Guest Fighter: In a Snowboard Kids game, along with Black Frost.
- Henshin Hero: Frost Ace
- Hot-Blooded Sideburns: Raiho
- An Ice Person: Most learn Bufu skills.
- In Its Hour of Need: Lucifer Frost will come to Dem/Makai Ice's aid in its hour of need.
- Jack the Ripper: He's a demon and the brother of Pyro and Frost but hasn't made a appearance since Jack Bros.... until Shin Megami Tensei IV'.
- Just in Time: Lampshaded in Strange Journey with Demonee-Ho. His compendium info even says "True heroes always show up late".
- Large and in Charge: King Frost.
- Legacy Character: Raiho wishes to be Raidou the Fifteenth.
- Mascot Mook: One of the first examples.
- Medium Awareness: Tends to be aware that he's the Series Mascot. In Strange Journey, pointing this out not only makes him very happy, but also gets him to join your party, no further questions asked. Doing the same with Pyro Jack, on the other hand, makes him rather angry.
- Nice Hat: Raiho and Hee-Ho-Kun
- Optional Party Member: In Devil Survivor, Black Frost first appears as a Jack Frost in an event with Midori on day 3 in which he learns about the power of love. He is later seen on day 6 defending a group of low level demons from humans. Should the party choose to help him, he will automatically join on Day 7 on Naoya's, Kaido's, and Gin's routes.
- Our Angels Are Different: In Devil Children/Demikids and in the 3DS version of Soul Hackers games there's Lucifroz, a Jack Frost based on Lucifer who belongs to the Seraph clan.
- Pop Quiz: Jack Frost is a random encounter mini-game in Digital Devil Saga 2 as the player progresses and an optional boss. Jack asks 20 questions per battle, stopping only when the player answers wrong or correctly answers all questions for the round. Should the player correctly answer all 100 questions they win a certificate for answering the 100th question correctly, and a set of Stat-increasing Data. Players will also have the opportunity to fight Jack Frost should all questions are answered correctly in the final dungeon, the third layer of the Sun. Defeating him nets the Pass Ring, and Magatama ammo. Should all answers have been correctly answered, every time the party encounters Jack Frost, he may give the player random items before running away.
- Samurai: Raiho summons the Samurai Frost as one of his attacks in King Abaddon.
- Sentai: Five Different flavored Jack Frosts create their own Senshi clan. They can also be made into a single demon where all five count as one. With repel all on all stats.
- Series Mascot Mook
- Signature Move: In Strange Journey and IV, King Frost has the unique skill Cold World, essentially Mabufudyne with an additional 15% chance to One-Hit Kill.
- Snowlems: The whole lot of 'em.
- Super Empowering: Lucifer empowers a Jack Frost and turns him into Lucifer Frost to aid him against Beelzebub in the Devil Children anime.
- Superpowered Evil Side: Black Frost
- Took a Level in Badass:
- Nocturne: Hoping to become as powerful as the "Great Emperor", a Jack Frost in a quest for power (the same one who was running the Junk Shop in Shibuya) finds the Satan Magatama, and eats it, increasing his powers and transforming himself into Black Frost; with his new powers, he would later take over Kabukicho Prison long after the Mizuchi jailer has been vanquished, and freezes the entire facility, taking several Jack Frosts as his subordinates. If Hito-Shura revisits the facility and runs into Black Frost, The latter will force Hito-Shura to battle him to test out his new powers as the new Great Emperor. He will revert to a normal Jack Frost upon his defeat, and eventually melt. He later returns to join the group if Hito-shura visits the Third Kalpa of the Labyrinth of Amala.
- Devil Survivor: In the middle of the week, Midori enlightens a lowly Jack Frost (level 14 Fairy) of the virtues of fighting for love and justice. Near the end of the week, he shows up to defend a bunch of low level demons as Black Frost, a level 47 team leader Demon. And you get to use him in a few routes.
- In the first Raidou Kuzunoha game, in a second playthrough, an NPC will gift you a Bancho cape, which will be promptly stolen by a Jack Frost and taken to local Mad Scientist Dr. Victor to fuse with it. This will turn Jack Frost into Raiho, who will instantly challenge you.
- Strange Journey: A lonely Jack Frost appears in Sector Carina's basement, moping over the loss of his family. In an effort to achieve revenge, he asks the Protagonist to get him an Ice Vest to increase his power. Upon getting the item and using it, it grows and becomes a Frost Ace, unlocking the Frost Ace Special Fusion combination and granting a powerful gun to the Protagonist.
- Verbal Tic: He often says "Hee-ho" and interjects "hees" and "hos" into his dialog, a common verbal tic shared with other variations of "Jacks", such as King Frost and Black Frost.
- Vigilante Man: Frost Ace in Shin Megami Tensei: Strange Journey.
Kresnik and Kudlak
Kresnik and Kudlak
A Krsnik or Kresnik is a Slovenian type of vampire hunter, a shaman whose spirit wanders from the body in the form of an animal. The krsnik turns into an animal at night to fight off the kudlak, his evil vampire antithesis, with the krsnik appearing as a white animal and the kudlak as a black one.
- Adaptive Ability: The Kudlak in Devil Survivor.
- Anthropomorphic Personification: The Kresnik is the representative of goodness and light and the Kudlak symbolized evil and darkness.
- Arch-Enemy: Kudlak's appearances and dialogue often revolves around his eternal enemy, Kresnik. He is depicted with a sinister and vile personality to contrast his rival. Similarly, he is always weak to fire and usually resistant to ice attacks which are the opposite of Kresnik's traits.
- Cloud Cuckoolander: The Kudlak that appears in the first Devil Survivor.
- Dark Is Not Evil: The Kudlak that appears in Devil Children Messiah Riser. He joins Jin after the devil child rescues him from the Imperium forces.
- Feathered Fiend: Kudlak and Kresnik in the Demikids series. He's also The Starscream to both Light and Dark Imperius in the second anime.
- Feed It with Fire: In Devil Survivor, Kudlak will arise stronger every time it's killed, unless done so in a special way. It tries to goad the party into killing it.
- Forever War: They're destined to fight each other until the end of time no matter who gains the upper hand.
- Knight in Shining Armor: To contrast his rival, Kresnik usually has a benevolent and noble personality acting as something of a white knight.
- Love Potion: Kudlak knows Marin Karin in Devil Children Messiah Riser and attempts to use it on Jin so that Jin will aid him against the Imperium.
- The Only One Allowed to Defeat You - Kresnik is the only one allowed to defeat the vampire Kudlak. Well, there's also the fact that if Kudlak's not killed with said Achilles' Heel, he simply reincarnates stronger...
- Our Vampires Are Different: Kudlak.
- Sidequest: Alongside Kudlak he appears in Sector Delphinus as a NPC. He has a role in EX Missions given by him and his archenemy. He requests the Hawthorn spear for the final fight against Kudlak. After receiving their weapons the two will go to the far north of the 1st Floor to battle. If his mission is done then he will inflict great harm to Kudlak, who will retreat. If Kudlak has the Pest Crop he will poison Kresnik, who retreats. If they both have the weapons it will end in a draw.
- The Starscream: Kudlak in Devichil: Light & Dark first worked for the Dark Imperius Azrael only to later betray him to Light Imperius Remiel. Once he gets mistreated by Remiel during one of his temper tantrums does he decide to turn on him as well. Unlike with Azrael he dies in the process.
- Symbiotic Possession: In Devil Survivor, with Mari, who allows Kresnik to possess her to destroy its mortal enemy Kudlak.
- Vampire Hunter: Kresnik
Loki is the primary antagonist of the original Digital Devil Story: Megami Tensei novel, as well as the cult-classic anime adaptation it spawned. Similar to the Norse Mythology, Loki is portrayed as being rebellious and tricky; but at the same time, possesses a cruel and ruthless personality.
- The Alcoholic: Spends most of his time in Nyx's Lounge in Nocturne.
- Amazing Technicolor Population:
- His original design had bronze skin.
- His design for the OVA and the early games had blue skin
- His Shin Megami Tensei design has Purple skin.
- His Soul Hackers design has light blue skin.
- Back from the Dead: In Megami Tensei, he was resurrected by Lucifer to act as The Dragon.
- Big Bad: of Digital Devil Story: Megami Tensei
- Big Ol' Eyebrows: First and second designs.
- Bishounen: In the Devil Children games.
- Doppleganger Attack: In his Devil Survivor boss fights.
- Gone Horribly Wrong: summoned by Akemi Nakajima in Digital Devil Story to get revenge on a bunch of students, but he sets the plot in the process.
- Handsome Lech: Has a negotiation abilty called Wooing in Nocturne.
- An Ice Person: Mabufudyne
- In the Persona saga, his Signature Move is Niflheim.
- Louis Cypher: He pretends to be human when he is in his Gigolo form in Devil Survivor.
- Red Eyes, Take Warning: His original design.
- Trickster Archetype
- What the Hell, Hero?/Hannibal Lecture: In Yuzu Tanikawa's route of Devil Survivor, Loki appears in his human form and tells off the protagonist for attempting to escape the lockdown instead of fighting for the Throne of Bel. In some cases, he even chastises the protagonist for failing to even face Belial.
Not a demon but a priest that maintains the Cathedral of Shadows offering fusion and compendium services to whoever enters.
Oberon and Titania
Oberon and TitaniaThe King and Queen of Fairies from A Midsummer Night's Dream, respectively.
- Abduction Is Love: Titania kidnaps and traps Raidou in Faerie Land to keep him for herself so he can be loved by her in King Abaddon. Agreeing to stay with her is lawful.
- Authority Equals Asskicking
- Brainwashed and Crazy: Both of them, in Nocturne, by Sakahagi. The entire Fairy populace of Yoyogi Park follows.
- Cool Sword: Oberon
- Dirty Old Man: Oberon's Soul Hackers design has him as a fat, old man.
- Does Not Like Shoes: Titania
- The Fair Folk
- Fairy Sexy: Titania
- Fetch Quest: In Shin Megami Tensei II, Oberon tells you to get the Infidelity Sap from Puck, so he can work out a cure for Hiroko's Love Potion predicament.
- Flower in Her Hair: Titania
- Give Me Your Inventory Item: In Strange Journey's "Faerie Land Establishment V" EX Mission, the Pixie needs a Titania and Oberon.
- Handsome Lech: Oberon. He even gets an ability called Wooing in Nocturne.
- He even attempts to get Raidou as his beautiful new page in King Abaddon.
- Love Potion: It also appears in a side quest in Raidou Kuzunoha vs. King Abaddon where Oberon uses it on Titania after she falls for Raidou.
- The Maze: In Nocturne, she had several Pixies warp intruders back to a certain point if they run into them.
- Pimped-Out Dress: Titania
- Requisite Royal Regalia: Oberon
- She's Got Legs: Titania
- Tiny Guy, Huge Girl: Oberon is the tiny guy and Titania is the huge girl. Justified because Oberon was cursed as a child, and has not grown any larger since.
- Took a Level in Badass: Titania has been a fairly average demon/persona in many games. In Devil Survivor 2, Titania becomes extremely useful when you unlock her, since she has a natural Null Elements (in other words, she can only be affected by status effects, physical attacks, and magic attacks that have pierce; at this point in the game, there are many strong magic demons) that do not take up any skill slots and has fairly high Magic. Fuse her so that she has Null Everything and she could be one of the best demons in the game.
- Winged Humanoid
Ose, Flauros, Decarabia, and Forneus
Ose, Flauros, Decarabia, and ForneusFour demons from the Ars Goetia, Ose and Flauros are known for sometimes interacting with each other and the same goes for Decarabia and Forneus.
- Ars Goetia
- Ascended Demon: Ose and Flauros once they go Hallel thanks to Chiaki in Nocturne. The two show up as Hallel again in Shin Megami Tensei IMAGINE.
- Badass: Both of them.
- BFS: Flauros
- Big Bad: President Ose in Tokyo Revelation.
- Cyclops: Decarabia
- Divergent Character Evolution: Flauros was a Palette Swap of Ose in Shin Megami Tensei I, but got his own character design in the other games.
- Dual Wielding: Ose
- Flying Seafood Special: Both of them.
- Good All Along: The Ose that appears in Devil Children: Light & Dark anime and serves as one of Light Imperius minions. He gives Jin and the others a Secret Test of Character. When they pass Ose gives them the item needed to beat Imperius.
- Heroic Sacrifice: Ose ends up pulling one in Devil Children: Light & Dark when Gemori shows up and attempts to kill Jin, taking the blow meant for him.
- An Ice Person: Forneus
- Light Is Not Good: The Hallel forms given to them by Chiaki in Shin Megami Tensei: Nocturne, in which they are purified and regain the shape they had before their fall. The two later achieve Hallel status in Shin Megami Tensei: Imagine where they act as Co-Dragons to Satan.
- Loincloth: Ose. Though he has been seen in other similar substitutes.
- Odd Friendship: Decarabia and Forneus even have a Fusion Spell named Best Friends in Persona 3.
- Panthera Awesome: Ose and Flauros
- Playing with Fire: Decarabia
- The Quiet One: Ose in Tokyo Revelation.
- Stealth Pun: Forneus is described as a "sea monster" in the Ars Goetia, Kazuma Kaneko designed him as a manta ray, also known as the "devil fish". Likewise Decarabia is described simply as "a pentagram"; he appears in-game as a starfish with an eye in its center.
- Those Two Guys: Forneus and Decarabia
- Warm-Up Boss: Forneus in Shin Megami Tensei III: Nocturne
Pixie is one of the most frequently appearing demons in the Megami Tensei universe. She is almost always the first demon recruited and helps the protagonist through healing.
- Breakout Mook Character: Stars in a game with Jack Frost and his bros for the Virtual Boy.
- Disk One Nuke: There is a special staff password in Strange Journey that will unlock a Pixie with special starting stats. The resulting Pixie will only be Lv.1, but will have a magic stat of 10 and a luck stat of 99 along with knowing the skills Megidolaon and Mediarahan. The password is
- Fairy Sexy
- Fiery Redhead
- Gender Bender: Pixie is male in the Devil Children series.
- Give Me Your Inventory Item: (Shin Megami Tensei: Strange Journey) Pixie will also issue the first possible EX Mission, The Injured Little Fairy, in which Pixie requests a Bead, which can be obtained as the spoils of the battle against Morax. Accomplishing this mission is rewarded with a Pixie Knife, a melee weapon that can inflict charm. Later, the same Pixie will evolve to High Pixie and begin issuing requests to bring Fairy demons to her so she can create a land for Fairies. However, direct evolution of Pixie to High Pixie in this game is not possible (the only way to do so is through a Special Fusion).
- Leotard of Power
- Lethal Joke Character: Pixies can appear randomly in Samsara Tunnels in Digital Devil Saga and can be summoned by Bonus Boss Elizabeth in Persona 3. Both of which know Megidolaon, the latter of which does ten times the maximum health cap for the game.
- Magikarp Power:
- The first demon you get in Nocturne is a Pixie, who wants to get out of the hospital and go to Yoyogi Park. She'll help you out in getting the card needed to get out. After you arrive at one end of Yoyogi Park, she'll try to part ways with you, but if you tell her you need her, she'll stay with you. For Nocturne Maniax, if you take Pixie (or one of her 'descendants') to a certain area of the Fifth Kalpa, she'll turn into a level 80 "super" Pixie.
- Raise a Pixie in Nocturne properly and she'll evolve into High Pixie. Keep her for long enough and you'll get Queen Mab.
- Shock and Awe
- Took a Level in Badass / Badass Decay: In Persona, she can learn Zionga. Got a decay in Persona 2: Innocent Sin by having that skill removed and then another boost in Eternal Punishment where she can now naturally learn Megido. Another decay in Persona 3, in which she doesn't learn a single offensive spell by natural means. And another boost in Persona 4, in which can naturally learn Zio.
- Video Game Cruelty Potential: After getting the leader Pixie in Shin Megami Tensei IMAGINE, you can choose to give her to Snakeman to create healing salves or you could keep her to get a valuable item.
- White Mage
- Zettai Ryouiki
Setanta / Cu Chulainn
Setanta / Cu ChulainnCu Chulainn is an Irish mythological hero who appears in the stories of the Ulster Cycle, as well as in Scottish and Manx folklore. The son of the god Lugh and Deichtine, sister of the king of Ulster, he was originally named Setanta, but gained his better-known name as a child after he killed Culann's fierce guard-dog in self-defense, and offered to take its place until a replacement could be reared.
- Bi the Way: When the player uses him as a mount in Shin Megami Tensei IMAGINE, he carries the player bridal style and gazes into the player's eyes, regardless of gender
- Blade on a Stick: Gae Blog
- Blow You Away
- Combination Attack: Persona 3: Cu Chulainn, along with Scathach, can use the Shadow Hound Fusion Spell, which inflicts severe Strike damage upon all enemies.
- Dub Name Change: Cu Chulainn is renamed to Lance in the English release of Megami Ibunroku Persona.
- Evolutionary Levels: Cu Chulainn appears as a distinct demon in Shin Megami Tensei III: Nocturne. He cannot be encountered nor recruited by the Demi-fiend, rather, the Demi-fiend can only obtain him by evolving Setanta by reaching at least Lv. 52 himself and completely mastering Setanta's skillset.
- Long-Haired Pretty Boy
- Only Known by Their Nickname: Although the real name is Setanta while Cu Chulainn means "the Hound of Culann" (a title he got after killing Culann's hound and taking its place)
- Our Fairies Are Different
- Palette Swap: Tam Lin is basically Cu Chulainn in blue. In fact, Tam Lin has been a recolor of Cu Chulainn since the first Shin Megami Tensei game. Interestingly, Cu Chulainn's old design from Soul Hackers returns in Devil Survivor 2, while Tam Lin uses the recolor of the Nocturne design, thus he and Tam Lin don't share the same, palette-swapped appearance.
- In Majin Tensei II, Diarmuid is a palette swap of Cu Chulainn.
- Scarf of Asskicking: Worn as Setanta
- Side Quest: Cu Chulainn appears as a NPC in the EX Mission A formal search request in Strange Journey, in which his mother has traveled to the Schwarzwelt to find him. The trail for him leads first to Sector Bootes, where an Orthrus will indicate he has moved to Sector Antlia to offer support to his old teacher Scathach. Meeting with Scathach will reveal Cu Chulainn has heard of the search and is moving to meet the protagonist. Near the entrance to Sector Antlia, Cu Chulainn will be found with Enemy Search. He will leave for Sector Carina to meet with his mother; once met there, he will reward the protagonist by unlocking Cu Chulainn fusion, giving him Gae Bolg, his spear, and giving him the Knight's Oath, which contains a Demonica code to summon him.
- In IV, Scathach's gotten tired of trying to control his bloodlust, so she transforms him back into Setanta and has Flynn duel him so he can realize how counterproductive it is for him. After a beatdown, he's allowed to regain his full form and his Special Fusion is unlocked.
- Shock and Awe
- "The product of a failed summoning. Bereft of its original powers, it's trapped in an incomplete gel form. Its journey from the Atziluth world to the Assiah world was incomplete in some way."— Compendium info from Shin Megami Tensei: Strange Journey
- Art Shift: Either looks like a typical blob monster or a dissolving skeleton covered in slime depending on the game.
- Blob Monster
- Joke Character: Especially prevalent in Strange Journey and IV, where they're weak to nearly every type of attack.
- Weaksauce Weakness: In IV, they're weak to even basic physical attacks.
- Palette Swap: Has different colored versions of itself as regular enemies.
Not a demon, but rather, a recurring human throughout the series. He's 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 first game. Bears absolutely no resemblance to Steven Hawking.
- Action Survivor: He manages to survive through every catastrophe that occurs, which is amazing, considering that he's, well, crippled.
- Ambiguously Human: He has a strange habit of going wherever he pleases, be it a demon's Domain or the Void Between the Worlds. Add to that his shining glasses, the odd echoes in his voice, and the fact he's been alive since Shin Megami Tensei I, a timeline implied to have been erased from existence by the events of the Raidou Kuzunoha duology, and suddenly the good Doctor seems a lot weirder...
- Ascended Extra: Goes from being a Recurring Extra to a key character of the fourth game's neutral path.
- Big Good: In short, if you see him, it's quite likely he's orchestrating victory for humanity. In SMTIV, he's very much your primary supporter on the Neutral path.
- Bonus Boss: Final finally lets you fight him through DLC. He has apparently grown so powerful that an alliance between the Hero, Aleph, the Demi-fiend, Flynn, and Nanashi is required to beat him.
- Gadgeteer Genius: He updates the demon summoning equipment wielded by the protagonists.
- Genius Cripple: Became crippled after he was attacked by a demon.
- Gondor Calls for Aid: In the first Shin Megami Tensei game, he sent the Demon Summoning Program to as many people as possible before getting captured.
- Gone Horribly Wrong: Testing of his teleportation program randomly managed to rip a hole in reality that filled the world full of demons.
- I Owe You My Life: The SNES series protagonists would be dead if they didn't have STEVEN'S demon summoning program.
- Mythology Gag: In Soul Hackers, a New Game+ COMP software is named after him, and it removes the fusion level limit.
- No Celebrities Were Harmed: Totally not Steven Hawking.
- Pro-Human Transhuman: He clearly has become something more than human by this point and he believes that humans should not need to rely on gods and therefore represents a humanistic Neutral view that rejected the esoteric, supernatural outcomes of Law and Chaos. This is apparently based on the real Steven Hawking on how he doesn't reject gods, but rather view them as unnecessary.
- This of-course makes his behavior in SMTIV all the stranger with him now all of a sudden trying to create a new goddess to replace one that died that can then guide humanity.
- Recurring Extra: Through the main series Shin Megami Tensei games, with the exception of Nocturne.
Taira No MasakadoA feudal Japanese warlord, one of the few true historical figures in the series. Masakado was a samurai during the Heian period and hatched a plan to conquer most of the Kanto region. While he was slain, his influence was so strong his head was sent to Kyoto and later Edo, where it was set in a special shrine. To this day he is considered a demigod of sorts, and it is said condition of his shrine dictates the city's fortune. Due to his fervant loyalty to his country and faith in humanity in general, he is widely considered to be the closest thing the series has to a Neutral representative.
- Ascend to a Higher Plane of Existence: Not in game, but historically. From rebel samurai to protector deity of Tokyo, not bad at all.
- Badass Normal: How else could a samurai lead the Four Heavenly Kings?
- Balance Between Good and Evil: He must reside in balance and should either one overcome the other inside him he will go berserk. The bad luck and misfortune in the capital in Raidou Kuzunoha vs. King Abaddon allowed his rage to possess his body, leaving his rational half to leave his body to find Raidou Kuzunoha. In Shin Megami Tensei IV his balance going out of whack leads to the final DLC battle against him in order to calm him down.
- Big Damn Heroes: If Masakado is restored in Shin Megami Tensei II, he will help in banishing the guards around Castle Kether in the Neutral Alignment.
- Bonus Boss:
- One of the two ultimate bosses of the game alongside Lucifer in Raidou Kuzunoha vs. King Abaddon. He can only be fought on New Game+, 99% completion of all case file at least once which requires beating the chaos route and facing the New Game+ ones given by Lucifer, and talking to a man outside the Narumi Detective Agency to get the case file. He can be found in the 999th floor of the confinement chamber and will be joined by an "imposter" Masakados who acts as a Mag Drain Battery but are not infinite in number. After bringing his HP down to zero Raidou must negotiate with him to end the battle. The reward for beating him is the material needed for the ultimate sword Masakados and the ability to fuse Masakados.
- In IV's final DLC quest he goes berserk as an ICBM is looming in the horizon over Tokyo. He wanted to cover the entire city with his body, but lost control of his power and had to be woken. He, quite simply, requires the Pierce DLC skills, as he flat-out drains everything. Except Light, Dark and Almighty. Light and Dark he nulls, and Almighty is a complete joke against him. To add insult to injury, he wastes many of his six turns in moves that don't do anything like Move Slowly, Aim Carefully, Clench Fist and Prayer. Then he breaks out Curse Thy Enemy and Guardian's Eye. He has double the amount of raw HP of one Lucifer's forms or more than four times the HP of Merkabah's first form and almost three times as his second form. Oh, and you only have ten turns to defeat him.
- Came Back Wrong: When you resurrect him in Shin Megami Tensei II, he will be nothing but an animated corpse until Hiruko gives you the final part needed - Masakado's soul.
- Continuity Nod: To summon him, an item known as Masakados is almost always needed.
- Emotion Eater: A rare semi-heroic example on the Neutral Path. He devours the emotions of Hope, Goodwill, and Spite in order to regain his strength.
- Evil Makes You Ugly: His anger possessing his body in Raidou Kuzunoha vs. King Abaddon turns him into the bald form he had when he Came Back Wrong in II.
- God in Human Form: The protagonist from the OVA Tokyo Revelation is the reincarnation of Masakado.
- Gotta Catch 'Em All: In Shin Megami Tensei II, his servant, Hiruko, will reveal Masakado was slain some time earlier. So he asks Aleph to gather the pieces of his corpse so he can be brought back to life.
- Also, should the Demi-fiend gather all twenty-four Magatama the priest at the Cathedral of Shadows visited will give him the Lord's Blade, allowing him to reach the Bandou Shrine and confront the Four Heavenly Kings, his servants, for the right of a single conversation with Masakado.
- When awakened in IV's Neutral Path, he's lost access to his physical form that became the dome and thus the source of most of his powers. So he must devour the three Great Spirits as a substitute so he can remove the Firmament above Tokyo to restore everything to normal. He needs Flynn to recreate the Great Spirit of Hope by taking on missions to restore Tokyo's citizens' hope, and to retake the Great Spirits of Goodwill and Spite by taking them from the entities who have absorbed them - Merkabah and Lucifer, after they interfere with his first attempt to remove the firmament when he devoured the Great Spirit of Hope.
- Guardian Entity: For Tokyo. He's had his ups and his downs.
- Mythology Gag
- Our Giants Are Bigger: His full powered form is a giant made of the earth.
- Patriotic Fervor: Patriotism is good. A God who has unyielding loyalty to Tokyo, followed by loyalty to the nation and its people.
- Physical God: The level needed to fuse him is almost always very high. And it shows. In Shin Megami Tensei: Strange Journey, for instance, he nulls instant death spells and is strong against literally everything except piercing.
- And the Magatama bearing his name nulls everything except Almighty attacks and imparts priceless augmentations in Nocturne. Given he is the protector of Tokyo, and Tokyo at the time is the Universe...
- Power Dyes Your Hair: His reincarnations hair turns blonde when he awakens from inside his reincarnation.
- Take Up My Sword: Literally in Shin Megami Tensei I, in the Neutral Path.
- In Nocturne, he manifests in the Bandou Shrine, and he's depressed, with good reason. He has to see Tokyo, the city he was bound to defend, utterly destroyed to create the Vortex World, its inhabitants dead and demons infesting it. Then the Hito-Shura arrives, and since Masakado cannot exist outside the shrine due to the laws of the Vortex World, he gives the boy the Magatama holding his power, telling him that whatever has happened to Tokyo, it's still Tokyo, and since he cannot continue in his duty, to please restore the world...
- Undying Loyalty: Regardless of whether he's Chaos or Neutral, Masakado will always be loyal to Tokyo itself.
Thor is the thunder god of Norse Mythology. If somehow that doesn't sound familiar, see Characters.Norse Mythology.
- Cool Helmet: All depictions.
- Drop the Hammer: Mjolnir.
- Glowing Eyes of Doom: Regular depiction.
- God Was My Copilot: (Shin Megami Tensei I) Thor is actually an agent of God dedicated to the ideal of the Thousand Year Kingdom, sent to Earth after discovering that Gotou has discovered a way of summoning demons from Makai to the humans realm. He takes the form of the American ambassador to Japan, Ambassador Thorman, and requests the aid of the Protagonist in defeating Gotou and prevent the demons from overrunning the Earth. He later reveals his true Thor persona and objectives to the heroes.
- Judge, Jury, and Executioner: In Nocturne but he lets the Protagonist go if they beat him and his minions in combat.
- Leotard of Power: Regular depiction.
- Nuke 'em: (Shin Megami Tensei I) To neutralize the demon infestation, the "Hammer of Thor" is summoned: a cluster of nuclear ICBMs that will purge Tokyo of its sins. With this, Japan is completely obliterated.
- Shock and Awe: It's Thor. What did you expect?
- Signature Move: Thunder Reign.
- Skippable Boss: (Shin Megami Tensei I) He congratulates the protagonist for aiding him in the purification of Tokyo on the Law alignment and promptly leaves, bringing up questions on his hiding location for the rest of the game.
- Social Darwinist (Shin Megami Tensei III: Nocturne) When he is working under the Reason of Yosuga.