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The Silent Protagonist of the game, Serph is the leader of the Embryon. Even with his emotions awakened, he remains a calm and composed leader for his Tribe. Over the course of the game, he forms a bond with Sera and soon becomes determined to protect her.His Atma is the Water Crown, and his demon form is Varna.
- Alliterative Name: His full name is Serph Sheffield, seeing as it is the full name of the person he was based on.
- Amnesiac Dissonance: In the second game, Serph realizes that the person whom he is based on was the one directly responsible for angering God.
- Blade Below the Shoulder: His main form of attack when in demon form.
- Everyone Has Pistols: His weapon in human form is a pistol.
- The Gunslinger: It takes second place to his demon powers, but it's shown in cut-scenes that Serph has a deadly aim (to borderline Trick Shot levels), and in game he rarely misses a shot.
- Fusion Dance: With Sera, in the second game.
- An Ice Person: His primary element is ice.
- Heroic B.S.O.D.: Learning that his original human self was a rotten, heartless Mad Scientist did not sit well with poor Serph.
- Heroic Mime: Justified in-game as Serph's lack of personality reflects Sera's lack of understanding of who the real Serph Sheffield really was.
- The Quiet One: Interestingly, Serph's lack of expression is actually commented on by the rest of his team.
- Meaningful Name: Serph -> Serf, given the original purpose of the Junkyard and Sera's Dream Serph.
- Not So Stoic: Twice in the second game. First when he found out the truth about his and Sera's pasts, and then again when Cielo dies.
- Punny Name: Serph -> surf -> water -> ice
- Silent Protagonist: Serph never speaks in the first game. Lampshaded by Heat after the fight with Beck, who says he should speak up a bit more.
- Together in Death: With Sera in the second game.
- Tomato in the Mirror: He is based on Sera's perception of who Serph Sheffield was but his lack of personality reflects how little she knew of the real thing. He grows as a character and becomes distinct from both the original Serph Sheffield and Sera's false perception of him.
- "C'mon, your ass is mine."
- Blood Knight: Clearly looks forward to his fights.
- Eleventh Hour Ranger: In the last dungeon of the second game, he can be recruited in the final dungeon if you made certain dialogue choices throughout the two games.
- Face–Heel Turn: In the second game.
- Forceful Kiss: He does this to Sera, causing her to run off.
- Go Out with a Smile: As Serph carries Heat out of the room, a faint smile can be seen of Heat's face.
- Grenade Launcher: Wields single-shot, break-action launcher in human form.
- Hot-Blooded: In keeping with his fire powers.
- The Lancer: In the first game.
- Love Makes You Crazy: He becomes increasingly dissatisfied by the attraction between Sera and Serph, which leads to his Face–Heel Turn in the second game. It's not entirely unjustified, considering what the real Serph did to Sera.
- Playing with Fire: His primary element is fire.
- Social Darwinist: He's the first to embrace the idea of strength and eating the weak.
- Tomato in the Mirror: He is based on Sera's perception of Heat O'Brien, a scientist who worked alongside Serph Sheffield on the God Project. Despite his hostile exterior, O'Brien genuinely cared for Sera and became horrified at how callously Sheffield treated her. When O'Brien attempted to stop him and save Sera's life, he was shot in the back by Argilla (under Sheffield's manipulations). O'Brien's data then became trapped in the E.G.G. and watched over Sera while his counterpart in the Junkyard developed to become his own person.
- What Is This Thing You Call "Love"?: Heat in particular struggles with this since he doesn't quite understand his feelings for Sera and can only express himself through force and anger. This reflects Sera's inability to get past the real Heat O'Brien's scary exterior and see the side of him that truly cared for her.
- "I'm sorry, I'll make this quick."
- The Chick: Easily one of the nicest characters in the game, complete with Cry Cute moments.
- Cold Sniper: Before the events of the game, since everyone in the Junkyard is emotionless.
- Combat Medic: Starts off with support spells.
- Combat Tentacles: Prithivi's arms can extend out, which allows her to use them as whips.
- Dishing Out Dirt: Her specialty and the element she resists.
- Friendly Sniper: The sniper of the group, and easily the nicest member of the Embryon.
- Good Scars, Evil Scars: A small, thin one over her eye.
- Heroic Sacrifice: In the second game she sacrifices herself to stop that big demon monster thing.
- I Just Want to Be Normal: Says these exact words after receiving her powers.
- Intimate Marks: On her left breast.
- Leotard of Power: If one looks really closely at the slit of her skirt when she moves.
- Light 'em Up: Inherits Seraph Lore from Jinana in the Sun should save data from the first game be imported.
- Nice Girl: Out of the entire cast, she's easily the friendliest and most compassionate.
- Paper-Thin Disguise: It's to trick the Dragon. Lampshaded by Cielo.
- Personality Powers: Learns support and Tera spells, reflecting both her wish to be normal and her friendly nature.
- Punny Name: It's Italian for "clay".
- Rose-Haired Sweetie: Although you can't tell from her page image, she has a compassionate personality.
- Squishy Wizard: Her stat growth favors Magic, making her vulnerable, but leaving her with spells that will leave enemies that are weak to them helpless.
- Technicolor Eyes: Pink.
- Tomato in the Mirror: Argilla was based upon a nurse who took care of Sera during her time in the God Project. Although caring and flirtatious, the real Argilla fell prey to Serph Sheffield's manipulations and killed Heat O'Brien when he threatened Serph with a gun.
- Whip It Good: Her demon form.
- "We have the advantage, proceed."
- Armed Legs: In his human form, his boots have daggers built in them. In his demon form, he can extend blades from his feet.
- Character Tics: He has a habit of touching the bridge of his nose reminiscent of the way a person might adjust their glasses. It's implied to be a habit that he inherited from his past life as David, who wore glasses.
- Cybernetics Eat Your Soul: Implied. The novels note that he is the "Bishop" of the Embryon, which means his head is loaded to the gills with cybernetics in order to act as the strategist. Naturally, he's The Spock of the team.
- Died in Your Arms Tonight: How he dies both as David Gale and data Gale, and both times with Angel.
- Emotion Suppression: You can see his eyes flicker green whenever he has visions of Angel crying. It takes Lupa's death for him to properly awaken.
- Extremity Extremist: Primarily uses kicks to attack.
- Hurricane Kick: Uses an upside down variation when using a multi-hitting physical attack
- The Lancer: Takes on this role in the second game, since Heat is M.I.A.
- Not So Stoic: The very first thing he does after awakening is declare his Rage Against the Heavens. Loudly.
- Playing with Fire: Inherits Pyrithegethon from Lupa in the Sun should save data from the first game be imported.
- The Smart Guy: He's the main technical advisor and strategist of Embryon.
- The Stoic: He takes the longest to awaken to his emotions, and even after awakening he's the least likely to act on them of all of Embryon.
- The Strategist: Serve this role for the Embryon.
- Straw Vulcan: The last of the Embryon to truly awaken to emotions, and even then he tries to push them aside in favor of logic.
- The Rest Shall Pass: He chooses to face of with Angel at the airport in the second game in order to allow the rest of the Embryon to seize a plane. It ends with both Gale and Angel dead.
- Tomato in the Mirror: His past self was David Gale, a researcher in love with Jenna Angel. Unfortunately, he caught Curvier Syndrome and died when his isolation ward was attacked by terrorists. Although he spent his dying moments trying to put Jenna's mind at ease, his death acted as the catalyst for many of her machinations.
Voiced by: Hiroaki Miura (JP), Dave Wittenberg (EN)
- "Okay you asked for it."
- Beware the Silly Ones: He may be the comic relief character, but when provoked he will kick your ass as one of the Tribhvana found out.
- Funny Foreigner: After gaining a Jamaican accent.
- Hair Color Dissonance: His hair is meant to be blue but looks more lilac sometimes.
- The Load: Fixed in the sequel.
- Punny Name: It's Spanish for "sky".
- Shock and Awe: His primary element.
- Tomato in the Mirror: He was based on one of the other children involved in the preliminary stages of the God Project, where he struck up a lasting friendship with Sera. Unfortunately, he would end up dying in the experiments along with every other child except for Sera.
- Took a Level in Badass: Again, in the sequel.
A mysterious black-haired girl who appears in the Junkyard along with the Atma. Unlike the other inhabitants of the Junkyard, she bears no identifying Tag Ring. Sera has no memory of her past, but claims to have come to the Junkyard to help everyone. Her song can pacify the demonic inhabitants of the world, preventing them from going berserk.Sera is actually the creator of the Junkyard, using a psychic power that allows her to manipulate data. In the real world, her power was used in a series of experiments designed to communicate with the superbeing known as "God". Because of the stress of these experiments, Sera created the Junkyard as a private paradise and haven for her own mind. When the existence of the Junkyard was discovered, the scientists forced her to re-purpose it into a military simulator for the development of combat A.Is.When Jenna Angel attempted to use the Junkyard as a testing ground for her plan to unleash the Demon Virus on a worldwide scale, Sera forcibly inserted her consciousness into the program at the cost of her memories. Her real body rests in the real world, hooked into an incubator that sustains her frail life.During the events of Digital Devil Saga 2 she inherits the Water Crown Atma from Serph, which lets her transform into Varnani.
- Distaff Counterpart: Her demon form is this to Serph's.
- Everyone Has Pistols: Her human form uses a pistol like Serph.
- Fusion Dance: With Serph, in the second game.
- Girl in a Box: How she is introduced.
- An Ice Person: After obtaining an Atma and being able to turn into a demon her primary element is ice.
- Late-Arrival Spoiler: Her inheriting the Water Crown is spoiled on the second game's box art.
- Magic Music: Her singing can calm berserk demons.
- Non Action Gal: First game only.
- Took a Level in Badass: In the sequel she stops being a Damsel in Distress and gets herself an Atma so she can fight alongside Embryon.
- Younger Than They Look: Sera suffers from Rapid Aging as a result of the repeated use of her "Cyber Shaman" powers. This gets to the point she cannot survive for too long without the sustaining fluids from the EGG.
- "I see now... There is one thing I finally understand... In this world, it's eat... or be EATEN!"
- Crippling Overspecialization: All his damaging moves are Fire-element, so Heat's Void Fire renders him completely harmless.
- Freak-Out: He reacts poorly to the Atma.
- Go Mad from the Revelation: The advent of the demon virus and sight of his men going berserk smashes Harley's sanity into little bloody pieces.
- Hellish Horse: His demon form Hayagriva.
- Playing with Fire: He uses fire magic.
- Sacrificial Lion: He exists to show just how devastating the Atma can be upon the Junkyard and how much it can change things. The Vanguards collapse in a day, and Harley goes from a competent leader to a frightened child.
- Warmup Boss: His battle mainly serves to show how useful elemental shields are; he's incapable of even damaging the party if Heat's Void Fire is active. (He'll also cover his own weakness with Void Ice occasionally, but it's not like that makes him a threat)
- "Many of us have died due to this unexplained power. If my reaction is "sad," then yes, I am sad."
- Died in Your Arms Tonight: To Argilla.
- Fashionable Asymmetry: It's subtle but one of her leggings is red whilst the other is grey, her tear drop marking is on her right cheek and her hair is combed over her left eye.
- Flunky Boss: Summons Unicorns to aid her.
- Fusion Dance: Her data is absorbed by Argilla in the sequel should save data be carried over form the first game, granting her Seraph Lore.
- Intimate Marks: She has a Power Tattoo on her right buttock.
- Light 'em Up: Uses Hama and her special combo attack Seraph Lore.
- Spared by the Adaptation: She survives the attack on the Solids base in the novels.
- Standard Status Effects: Uses Marin Karin to charm her foes.
- Stripperific: Her outfit basically amounts to a bikini, an open jacket, and boots. Not like the rest of her tribe is much better.
- Tragic Monster: Due to not eating others she eventually goes berserk and has to be put down by the Embryon.
- Tron Lines: Her body is covered in green lines after going berserk due to the Virus, but they're gone when she's fought.
Originally The Dragon to Jinana, Bat's emotions awaken after he is defeated by Serph and he gains a severe case of Chronic Backstabbing Disorder, becoming a recurring antagonist to the Embryon.His Atma is Sonic Wave, and his demon form is Camazotz.After switching sides to the Solids and then the Brutes, Bat ultimately dies after a final rematch with Serph when the ship he is on explodes as part of a plan to weaken the Brutes]
- Baleful Polymorph: He can transform your party into bats.
- Bat Out of Hell: His demon form is a giant bat.
- Blow You Away: Eventually learns wind spells by the third encounter and gets his own skill Winds of Hell.
- Chronic Backstabbing Disorder: Betrays every one he works with save for Varin, but only because he gets killed before he could possibly try.
- The Dragon: First to Jinana, then to Mick, and tries to be another one to Varin.
- Flunky Boss: During his second boss fight where he'll summon Baphomets.
- Irony: His "Guard" skill, which reduces the damage of all attacks that would damage him while unguarded, but not only does it remove his immunity to Earth attacks, it also makes him weak to them.
- Jerkass: Petty and cruel to the bone: Bat's loyalties lie only to himself and he delights in taunting Argilla to get a rise out of her.
- Meaningful Name: A rather self-explanatory one, seeing as his demon form, Camazotz, is a giant bat.
- Recurring Boss: Fought three times through the first game and once again in the second, as Solar Data.
Mick The Slug
The leader of the Solids. After gaining the power of Atma, Mick becomes a cruel and sadistic leader who takes great pleasure in devouring others.His Atma is Solar Eclipse, and his demon form is Rahu.He captures Sera from the Embryon as per the Karma Temple's orders. However, he is betrayed by Bat and cornered by the Embryon, who kill him.
- Bad Boss: Enjoyed eating his men who went berserk because they didn't eat other humans.
- Big Eater: Takes to the new rules of devouring opponents with no problems at all. While most Tuners see devouring as a means to get stronger or stave off the virus, Mick seems to like gorging himself for its own sake.
- Dub Name Change: From Mick the Nick to Mick the Slug.
- Fat Bastard: Fat, and one of the leaders with very few redeeming qualities.
- Human Resources: He especially loves eating people.
- Our Dragons Are Different: His Atma Avatar is a dragon whose head can detach from the main body. Rahu even means Dragon's Head.
- Scary Black Man: A cannibal, though that's not strange in the setting, but the cruelty he demonstrates and sheer glee he finds in eating people puts him firmly in this category.
- Stout Strength: Fat, but also incredibly strong.
- Warm Bloodbags Are Everywhere: And to him, this is a good thing!
- Would Hit a Girl: Has no problem beating the crap out of Jinana.
The honourable and powerful leader of the Wolves. His tribe takes heavy casualties against the Brutes, and he approaches the Embryon for support.His Atma is Lava Flow, and his demon form is Cerberus.His belief in honour ultimately leads to his downfall when he refuses to eat the corpses of his fallen opponents. He succumbs to the madness of the Demon Virus and is put down by the Embryon.He is the reincarnation of Greg, former leader of the Lokapola and the father of Fred. Who died after he tested the Atma Virus on himself.
- Canis Major: Cerberus, natch.
- Eyeless Face: The three heads of Cerberus lack eyes.
- A Father to His Men: He'll gladly sacrifice himself to protect them.
- Foreshadowing: Him going berserk is hinted at in the Samsara Tunnels as the Embryon check the bodies of Brute tribesmen and talking to Wolves tribesmen. He starts off sparing as many people as he can and not eating them, but eventually he stops recognizing his own men and begins to butcher both Brutes and Wolves alike, while chewing on entrails.
- Fusion Dance: His data can do this in the sequel, where he'll pass on his strongest fire spell to Gale in the process.
- Honor Before Reason: Refused to devour anyone. As seen with Jinana, it doesn't end well for him.
- Meaningful Name: Lupus means "wolf".
- Past-Life Memories: He has them of his son and the fact that there are no children in the Junkyard helped him to understand that there is something up with the world.
- Playing with Fire: Knows the Agi spells and his unique Phlegethon and combo Pyriphlegethon fire skills.
- Red Eyes, Take Warning: Subverted, he's a friendly guy if you're his ally.
- Shoot the Medic First: During his boss fight, the left head provides healing to the center head every turn, making hurting the center head pointless unless you can somehow outpace the healing.
- Tragic Monster: Due to not eating anyone he ends up going berserk.
- Tron Lines: Red ones cover his body after going berserk. They're gone when he's fought as a boss, though.
The ruthless leader of the Brutes. After gaining emotions, he refers to himself as "Colonel Beck" and seems to know more about the Junkyard than anyone else. He carries a powerful grudge against Serph.His Atma is Turbulence, and his demon form is Ravana.His past self was Colonel Terence E. Beck (William van Beck in the novels), the military commander who ultimately approved the project that led to the current state of events in the world.
- Berserk Button: Do not call him Varin! He is a colonel! Colonel Beck!
- Beware the Silly Ones: He's not silly, but his demon form, especially once it's encased in the suit, is one of the goofiest looking things you will ever face in the game. He seems aware of this, and warns you not to underestimate him.
- Blade Below the Shoulder: His Atma Avatar has serrated daggers concealed in its hands.
- Climax Boss: The last of the Tribe leaders to be fought, and the last proper boss until the final one.
- Horror Hunger: Has the ability to invoke this in others.
- Instant Armor: His tail can split in two and encase his whole body in a suit of armor.
- Invisibility: The unique ability of his Atma Avatar. He can also use while in human form.
- Multi-Armed and Dangerous: His demon form has four arms.
- Mighty Glacier: Once he shifts to his second form, his movements slow down considerably, but he still remains powerful. His basic attack is little more than slowly extending his arm blade to the opponent, and yet it still does heavy damage.
- One-Man Army: He defeated most of the Wolves, the second largest tribe in the Junk Yard, on his own.
- Purple Eyes
- Sequential Boss: Starts off as an insectoid creature that turns invisible, forcing the party to play a guessing game as to where he is while Sera tries to narrow it down. Once he takes enough damage, Varin encases himself in an exoskeleton and engages the party head-on.
- Super Strength: Throws people around like rag dolls and effortlessly catches one of Heat's stonewall shattering punches.
- "Rend...Slaughter...Devour your enemies! There is no other way to survive. You cannot escape your hunger, Warriors of Purgatory!"
- The Atoner: Towards the end of the second game, she offers support to the Embryon and can even give Seraph a special attack after she dies. Like the rest of the Embryon, she is reincarnated.
- Big Bad: She is the final boss of the first game.
- Chewing the SceneryAngel: At last we shall see the maturation of the seed I HAVE SOWN IN YOU!
- Died in Your Arms Tonight: With Gale.
- Dragon with an Agenda: She works for Margot Cuvier, but ultimately works to subvert her and all she has planned.
- Final Boss: Of the first game.
- Flunky Boss: In the second phase of her fight, she summons orbs that protect her from damage of each orb's corresponding element.
- Heartbroken Badass: The Freudian Excuse for most of her actions is due to terrorists killing David in an attack.
- Leitmotif: "Maelstrom", a very distinct theme driven by powerful strings.
- Names to Trust Immediately: Subverted.
- One-Winged Angel: She's got an Atma.
- Pre Ass Kicking One Liner: "Who do you think created the demon virus?"
- To Create a Playground for Evil: Her plans in the second game where to pretty much turn the world into one huge slaughter fest.
- Truly Single Parent: She's both Sera's mother and father.
A cat seen at various points throughout the two games.
- Chekhov's Gunman: Originally just some cat that popped up in random places in the Junkyard.
- Game-Over Man: Shows up and looks disappointed or sad during the game over screen in the second game.
- Physical God: Its true identity is Seraph. As an ascended being, Seraph exists beyond time and space and can therefore appear in the past to help guide its past selves towards enlightenment.
- Timey-Wimey Ball: He's actually Seraph, who is using Time Travel to insure that his past self reaches the point where he can become Seraph, then go back in time to insure that his past self reaches the point where etcetera etcetera etcetera.
Introduced in DDS 2
The leader of the Lokapala resistance group that opposes the Karma Society. The stress of his position has driven him to drink, and he distrusts all demons. However, after meeting Serph he decides to sober up and join his cause, using the Demon Virus on himself so he can be an asset to the team.Depending on the player's choices he will rejoin the team for the final dungeon instead of Heat.His Atma is Lightning Bolt, and his demon form is Indra.
- The Alcoholic: At the start. He sobers up to help out the team.
- Badass Beard: That is one nice goatee.
- Heroic Sacrifice: Gives his life to stop Meganada
- Mr. Exposition: When the party first meets with him.
- Odd Name Out: Seriously, where's the pun?
- Meaningful Name: His name can mean "Great Country", which he is fighting to protect.
- Shock and Awe: His primary element,
- Shotguns Are Just Better: Wields a shotgun in human form.
- Sixth Ranger: He's the only party member not to be present in the first game.
Voiced by: Naomi Shindo (JP)
A young boy who Argilla saves not long after leaving the Junkyard. He is revealed to be a member of Lokapala, the son of the previous leader. He acts as an enthusiastic support to the Embryon and their cause.
- Bratty Half-Pint: At times
- He's All Grown Up: He's the adult seen at the beginning of the second game.
- Narrator All Along: Of the second game.
- Parental Abandonment: His father died and reincarnated as Lupa.
- Parental Substitute: For the reincarnated Embryon.
- Sole Survivor: He's the only named character to survive the games.
AdilRoland's right hand man. Because of fellow Lokapala and leader Roland's alcoholism, Adil is the de facto leader of the Lokapala until Roland sobers up. Is very distrustful towards tuners but remains trustful towards Roland even after he get's his Atma.
- Scream Discretion Shot: As he is killed by Meganada.
The TribhvanaThe Karma Society's elite guard. They consist of three Tuners, known only by their codenames. Earth is the apparent leader of the trio, and can transform into Ubelluris. Heaven is the one female member, and can transform into Ganga. Air has the appearance of a mime, but is ironically the chattiest of the three, as becoming a Tuner seems to have taken a toll on his sanity. He can transform into Cu Sith.They are fought twice in the Karma Society. By the time the party reaches the E.G.G., Earth has devoured Air and Heaven, out of frustration and to gain even more strength. As a result, his Yaksa form becomes Abaddon. This angers Cielo, who is disgusted that Earth would forsake his comrades so easily.When defeated, Earth is spared by Cielo so that he can live to bear his karma.
- Axe-Crazy: All of them to some degree. Air's a cackling, bug-eyed lunatic, while Heaven has a sadistic Baroness vibe to her. Earth is far and away the most stoic and level-headed of the trio, making it all the more shocking when he snaps worse than either of them and devours them both.
- Barrier Change Boss: Abaddon's resistances and skills change around to match those of Ubelluris, Ganga, and Cu Sith, in that order.
- Barrier Warrior: Air can throw up shields to cover his and his comrades' weaknesses.
- Glass Cannon: Heaven has the lowest HP of the trio, but throws around Ma-Dyne spells like candy while transformed.
- I'm a Humanitarian: While every character with the demon virus has shades of this, Earth is the only one to kill and eat another named character.
- Item Caddy: Air and Heaven can use items on you in their first fight while untransformed.
- Luckily, My Shield Will Protect Me: Earth carries the same shield that all Karma Society soldiers do. He doesn't use it while tuning, of course.
- Mighty Glacier: Earth.
- Quirky Miniboss Squad: Until Earth eats the others, at least.
- Sanity Slippage: Air is implied to have gone through this after taking the demon virus. It's reflected in his voice somewhat. Earth goes through it too: two defeats by 'mere programs' drives him to devour Heaven and Air, and he's clearly snapped when the group finds him.
- Shock and Awe: In their second encounter, they have a powerful electric fusion spell.
- Super Strength: Earth; after eating his comrades, he is strong enough to crush rocks with his bare hands.
Voiced by: Hiroko Emori (JP)The woman in charge of the Karma Society. She hopes to preserve the last remnants of humanity by transforming the people of the Karma Society into demons and then keeping them fed with the ground-up remains of those who oppose her.
- The Atoner: After dying and going to the Sun she regrets her actions after she lost her way. Her wish is for Seraph and comrades to stop God from destroying mankind.
- Heel–Face Turn: After her death. She even joins Seraph and friends as they go to the Sun.
- The Unfought: Jenna gets to her before Serph's party does.
- Villainous Breakdown: After seeing her actions help caused God to start absorbing the planet.
- Well-Intentioned Extremist: Everything she does is to ensure the survival of the human race.
- Belly Mouth: Five of them.
- Hero Killer: Responsible for the death's of a huge chunk of the Lokapala as well as Adil, Argilla and Roland.
- Stance System: In the boss-fight against it, it switches back and forth between a magic focused stance and a physical based stance.
- The Unfought: Subverted. Argilla kills it in a cutscene-only suicide attack, but it becomes Solar Data and guards the Final Boss.
- Too Many Mouths: Sports a total of 11 mouths.
Voiced by: Kenji Nojima (JP), Yuri Lowenthal (EN)A charismatic scientist working on a series of experiments called "The God Project". He has a strong bond with Sera.His true self is a manipulative, power-hungry megalomaniac who seeks to use Sera's powers to become a god. He sees Sera and the people around him as mere tools to be used in his pursuit of this goal, and pushes the young girl to painful extremes while pretending to care about her.His downfall comes after he indirectly murders Heat O'Brien for trying to stop him, and Sera witnesses his true nature. He is transformed into a demon, but instead of being reincarnated in the Junkyard his soul is trapped in the E.G.G.
"Since when did people start expecting science to be humane? To study the body, you cut it open. To study the mind, you isolate it by crushing the heart. Historically, that's how science has advanced."
- A God Am I: His goal is to attain the power of God, and he proclaims his success right before his boss fight.
- Bitch in Sheep's Clothing: Portrayed himself as a caring figure to Sera, but only saw her as a tool to further his ambitions.
- For Science!: Nope. Science is simply a means to an end: another tool to secure him the power of God.
- Greater-Scope Villain: He set the events of the game into place through his experiments and murder of Heat O'Brien, which led to Brahman's anger and the Black Sun. His lying to Colonel Beck led to the creation of the Junkyard, as well.
- Lack of Empathy: Says in no uncertain terms that people are just tools to him.
- Manipulative Bastard: Talked all sweet to Sera in order to win her trust and convince her to endure the experiments, but in reality he cared nothing for her beyond what she had to offer him, and even then he saw her as disposable if it came down to it. He managed to get his hooks into the original Argilla, and she jumped to his rescue when Heat O'Brien threatened him.
- Morally Ambiguous Doctorate: He's a genius with no moral standards.
- Posthumous Character: By the time the games begin, he's long dead.
- Small Role, Big Impact: He appears for at most ten minutes yet his actions is what puts the whole story in motion, and is the closest this series gets to a true Big Bad.
- Smug Snake: Incredibly smug, evidenced by his gloating after having the real-world Argilla shoot Heat O'Brien dead. Unfortunately, he didn't realize Sera was listening in; the reveal of his true nature breaks her heart, and the whole world goes in the crapper.
- Villainous Breakdown: In the E.G.G., when confronted with the reality that he has died.
- Walking Spoiler: It is very hard to discuss him without spoiling pretty much the entire duology.
- White Hair, Black Heart: Inverted. Sheffield's hair was just as black as his heart. His white-haired digital counterpart was a much better person.
A somewhat hot tempered scientist working on "The God Project". His temper often intimidates Sera.In contrast to Serph he genuinely cared about Sera and was furious of his treatment of her. Finally after Serph takes one step to far, Heat snaps, threatening to kill him if the experiments weren't stopped but is shot dead by a nurse Serph had manipulated. His soul, like Serph's, ends up trapped in the E.G.G. and helps Asura Serph to discard his past self.
- Guest-Star Party Member: He's playable when Serph fights against Sheffield and the original AI Serph, and it's more than likely that he will carry you through the fight.
- Jerk with a Heart of Gold: He was temperamental, but much of his anger stemmed from the other scientists' treatment of Sera.
- Posthumous Character: Sheffield manipulated people into killing him.
- Walking Spoiler: For the same reasons as Sheffield.
Voiced by: Wendee Lee (EN)
The entity created when Serph and Sera's data merges on their path to the Sun. Seraph is a powerful, unisex being who has the potential to communicate directly with God and reach enlightenment.Their Atma is Clarion, and their demon form is Ardha.
- Eleventh Hour Superpower: Only becomes available during the final dungeon.
- Hermaphrodite: Thanks to being a fusion of Serph and Sera.
- Ki Attacks: Though technically it's prana.
- Meaningful Name: Subverted in regards to their elemental association. Seraph is not associated with Expel-elemental attacks as their name would imply.
- Non-Elemental: Seraph has no elemental alignment.
- Punny Name: A seraph is a type of angel in Christian mythology. Seraph is also a combination of Serph and Sera's names.
BrahmanThe God of the Digital Devil Saga universe. Along with Serph Sheffield, he's the one responsible for everything that happened, particularly in the second game. After Sheffield angered Brahman, he turned the Sun black, causing Cuvier Syndrome. Most of the second game after Sera's saved is spent trying to communicate with him, which results in everyone dying. After fighting through the Solar Data of the antagonistic tribe leaders and Meganada, the party meets Brahman, who tests them as the Final Boss.
- Battle Theme Music: "Divine Identity", which is widely considered one of the greatest Playstation 2 SMT boss themes.
- Final Boss: He's the last opponent of the second game.
- God Is Evil: Not really, actually. He's responsible for Cuvier Syndrome, but this is only because Serph Sheffield was so evil that he gave up on humanity, and he's more than willing to stop it if he is defeated.
- Greater-Scope Villain: Along with Sheffield. He doesn't do much and the plot is driven by Angel and Cuvier, yet the Black Sun causes most of the problems in the second game.
- Humans Are Bastards: The whole debacle with Sheffield and Sera convinced him of this, so now he's trying to wipe them out.
- Misplaced Retribution: Did Sheffield deserve the punishment God dealt him? Abso-freaking-lutely. Did the rest of humanity deserve to suffer for it? Probably not.
- Walking Spoiler: His identity as Brahman is kept hidden until you fight him, though he's mentioned as "God" quite a bit in the second game.
The Ultimate Bosses
The ultimate opponent of the first game, only fightable on a New Game+. He is the protagonist of Shin Megami Tensei III: Nocturne, a young man empowered by Lucifer as part of a test. Due to having the body of a demon, he is able to command other demons. He sets out to see who he will side with in the post-apocalyptic Vortex World - his friends, the instigator of the apocalypse, the demons, his teacher, or even Lucifer himself. He is the only enemy in either game with no race.
- Artificial Stupidity: His biggest weakness - you can lock two of his minions into using Dekaja and Dekunda, only with Dekunda not working due to a lack of MP. It's still a luck based fight, but it makes the fight quite a bit easier.
- Badass Boast: "Death's vastness holds no peace. I come at the end of the long road. Neither human, nor devil... all bends to my will." Doubles as Famous Last Words.
- Battle Theme Music: Notably, the BGM used is the standard random encounter theme from Nocturne, rather than any of its boss themes.
- Berserk Button: Do not come into battle with any immunities, or do anything that will cause immunities, other than Null Sleep (which causes attacks to miss the user when they're asleep). Otherwise, well, see One-Hit Kill below.
- Bonus Boss: The last one of the first game.
- Guide Dang It: Simply reaching him is very unintuitive. First, you have to beat the game. Then, you have to beat Ananta on a New Game+ and deny Gale's request of passing the Point of No Return. Then, you have to return to the Anahata basement and enter a very specific room.
- Mythology Gag: Heavily implied to have the Masakados Magatama equipped due to only being able to be hit by Gun and Earth, which didn't exist in Nocturne, and Almighty, which Masakados does not protect against.
- New Game+: It's the only way to fight him.
- One-Hit Kill: Gaea Rage, which can potentially deal over 10000 damage. Since it's an Almighty-elemental damage numbers skill rather than a traditional instant-kill skill, the only way to resist death is to either have a skill that provides a Last Chance Hit Point (which will just prompt him to use Gaea Rage again) or the aforementioned Null Sleep.
- Or Was It a Dream?: The basic premise of the fight.
- Previous Player-Character Cameo: As the protagonist of Nocturne.
- SNK Boss: Always fights with two minions, has the highest amount of health in the first game, gets a total of four turns between him and his minions, will one hit kill the party if they have moves he doesn't like, and the only way to survive said one hit kill requires a specific skill and a lot of luck.
- There Is No Kill Like Overkill: Gaea Rage. Inflicts four or even five digits of damage to the whole party in a game where playable characters have a cap of 999 HP.
The ultimate opponent of the second game's Hard Mode and one of the main antagonists or allies of the endgame of Shin Megami Tensei II. Widely known as YHVH's ultimate weapon, Satan was once divided into two halves: the Egyptian god Seth and a human named Zayin. When they fused to become Satan, Satan set out to eradicate all life on Earth under the orders of YHVH. Depending on Aleph's actions, he could become the penultimate opponent Aleph faced or Aleph's greatest ally in defeating Lucifer and, ultimately, YHVH. The Satan encountered as Solar Data in the Sun seems to be the Solar Data of a human infected with the Demon Virus who became the Satan from II. He seeks to judge Seraph for disagreeing with Brahman, who Satan believes to be YHVH, hinting that this Satan comes from either the Neutral or Chaos routes of II.
- Barrier Change Boss: He has four sets of affinities which switch between turns.
- Bonus Boss: The last one of the second game.
- Bragging Rights Reward: Subverted. You get absolutely nothing for beating him, unlike the Demi-fiend, who triggers the flag for a Karma Ring in the second game upon defeat.
- The Dragon: A self-styled one to Brahman, who he believes to be YHVH.
- Famous Last Words: Taken straight from II: "What do you intend to accomplish by avoiding...God's justice? Where will you go...?"
- Foreshadowing: The penultimate Bonus Boss is Seth, who makes vague allusions to the events of II. Further beyond him awaits Satan.
- Hard Mode Perks: The entire fight is one.
- Legacy Boss Battle: Represents II along with the Archangels and the previously unfought Seth. His fight is filled with references to the game, from his pre and post-boss speeches to a predictable single target one hit kill.
- Marathon Boss: Most successful attempts take half an hour.
- One-Hit Kill: God's Breath, which he uses every four turns if the party isn't fully buffed, and Retribution, which he uses in later phases to the party member with the lowest Magic stat.
- Puzzle Boss: This is the main difference between the Demi-fiend and Satan. While the Demi-fiend attempts to use brute force, Satan is much more calculating, having two types of form shifts (one based on turn number and one based on HP), only one-shotting the party if they're not fully buffed by the end of every four turns, requiring one party member to have a lower Magic stat than the other two members for his other One Hit Kill, and using Diarahan if he falls under 1500 HP.
- SNK Boss: His 30000 HP is the highest in either game, he's a massive puzzle, uses every element, can eliminate any unnatural elemental resistances, can inflict Charm without fail, has two types of One Hit Kills, and can use Diarahan to fully heal himself.