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Mutation
"Mutation is a type of Persona growth that happens sometimes after Fusion Spells. The better the compatibility, the likelier they are. How the Persona grows depends on its rank. The higher its rank at the time of mutation, the likelier a rare or useful mutation is. Some can become a different Persona entirely by selecting "Mutation" in the Velvet Room. A few Personas can only be obtained this way."
Persona 2: Innocent Sin

Mutation is a gameplay mechanic in the Persona 2 duology which can occur if a battle is won using a Fusion Spell. It differs from Evolution in that the Persona does not necessarily change forms, rather the Persona gains power or a new skill, although it is also possible for a Mutation to allow the Persona to evolve.

Role[]

Effects[]

When activating a mutation, four possible changes can occur:

Mutation (IS) Mutation (EP) Rank Effect
Increased Stats Parameters increased Any Persona's stats increase.
Can occur repeatedly until the Persona's stats reach maximum.
Two Ranks up 1-6 Persona's Rank increases by 2.
Skill learned 6+ Persona learns its hidden "Mutation" skill.
Persona can Change Forms Modification ability learned 6+ Persona can Evolve into a new Persona, usually a Persona of the Minor Arcana, however a few can "Rank Up", evolving to a higher-level persona of the same Major Arcana. Persona must be taken to the Velvet Room to change forms and returns to Rank 1. "Rank up" mutations can occur if the result is no more than 10 levels above the protagonist, however Minor Arcana mutations do not have this limit.

In the PSP remake of Innocent Sin, if the player misses obtaining the Prime Personas through the correct story choices, the Initial Personas can be evolved into their Prime forms any time after the story event where they would normally be obtained. In Eternal Punishment, Maia Custom can only be obtained by evolving Maia this way.

Eternal Punishment adds an additional mutation that can occur:

Mutation Effect
Unknown ability awakened Persona gains its Unknown Power, an ability similar in concept to "desperation attacks" - powerful abilities that activate at random, and can only activate if the user is at critical health. There are 6 different types of Unknown Powers; each Persona has one specific type of Unknown Power associated with it.

This Mutation only occurs if the Fusion Spell that ended the battle was either non-elemental, or of the same element as the Persona's Type.


Chance[]

The chance of getting a mutation depends on the characters' affinity for the persona, the number of people participating in the Fusion spell, and the type of fusion skill used:

Compatability Avg # of uses required to mutate
2-Person (Phys) 2-Person (Magic) 3-Person (Magic)
Best 28 7 16
Bad 130 116 105

In Innocent Sin, there is no way to increase the mutation rate, however Eternal Punishment adds the "Mutation Gear" accessory and a Sumaru Genie fortune to increase the chances of mutations occurring.


General
Dungeon - Combat - Turn - Action - Level - Experience - Party - Stats - Skills - Items - Equipment - Melee Attack - Ranged Attack - Damage (Fixed) - Guard - Escape - Accuracy - Critical - Multi-hit - Insta-Kill - Ailments - Drops - Encounter - Random Encounters - Symbol Encounters - Ambush - Difficulty
Franchise-wide
Demon - Magic (Fusion Spell) - Affinities - Unique skills - Extra Skills - Macca - Yen - Magnetite - Incense - Alignment - Moon Phase System - Demon Summoning Program (COMP) - Cathedral of Shadows (Fusion - Skill Inheritance - Accidents / Special / Three-demon / Sacrificial / Sword) - Demonic Compendium - Evolution - Negotiation (Special conversation) - Rag's Jewelry - Code Breaker - Press Turn - New Game Plus - Ultimate boss - Streetpass - Password - Skill Mutation - Energy Drain - Party Talks
Shin Megami Tensei series
Terminal - Guardian (if...) - Tactical Battle (NINE) - Capacity (NINE) - RTS (NINE) - Reinforcements (NINE) - Race Shift (NINE) - Modules (NINE) - Magatama (3) - Reason (3) - Demon Co-Op (SJ) - EX Missions (SJ) - Challenge Quest (4) - Skill Potential (4/A-5) - Smirk (4) - Barrier (4) - Partners (4A) - Jade Dagger (4A) - Magatsuhi Skills (5) - Essence (5) - Glory (5) - Miracles (5) - Demon Statues (5) - Abscess (5)
Devil Summoner series
Loyalty - Personality - Mystic Change - Nemechi (SH) - Case Files (RKKA)
Majin Tensei series
Rank - Affinity (2) - Arcana (Ronde)
Persona series
Shadows / Personas (Initial / Prime / Ultimate / Ancestor / Reverse / Sub) - Skill Card - Totem (1) - Type/Subtype (1+2) - Affinity (1+2) - Rank (1+2) - Mystic Change (1+2+5) - One More (3-5) - Growth Rate (1+2) - Unknown Power (1+EP) - Personality (1+2, 5) - Material Card (2) - Mutation (2) - Follow Up - All-out Attack (Cut-in) - Heart Item (3) - Shuffle Time (3+4) - Daily Life (3-5) - Calendar (3-5) - Social Stats (3-5) - Social Link (3+4) - Tactics (3-5) - Requests (3-5;Q+Q2) - Linked Episode (3RE) - Arcana Chance (4) - Forecasts (Fusion / Weather) (4+5) - Boost (Q+Q2) - Power Spot (Q+Q2) - F.O.E (Q+Q2) - Confidant (5) - Technical (5+5S) Treasure Demon (5+5S) - Party Switch (5+5S) - Disaster Shadow (5R) - Fusion alarm (5R) - Persona Traits (5R) - Third Eye (5+5S) - Master Arts (5S) - BOND (5S) - Persona Points (5S)
Devil Children series
Trainer - Bank - BattleNet - Relic Fusion - Power Fusion - Powers
Digital Devil Saga series
Berserk Mode (2)
Devil Survivor series
Devil Auction - Extra Turn Battle - Skill Crack - Titles (DSO / DS2 / RB) - Fate System (2) - Add-On (2)
Other
Equip Type (GMT:TM) - Skill Systems (GMT:TM) - Sword Exchange (GMT:TM) - Class (TMS♯FE) - Class Change (TMS♯FE) - Topic System (TMS♯FE) - Side Quests (TMS♯FE) - Ad-lib Performance (TMS♯FE) - Session (TMS♯FE) - Dual Arts (TMS♯FE)
Major Characters
Playable Tatsuya Suou - Maya Amano - Lisa Silverman - Eikichi Mishina - Yukino Mayuzumi - Jun Kurosu
Non-Playable Philemon - Nyarlathotep - Joker
Minor Characters
Plot Relevant Maya Okamura - Akinari Kashihara - Shunsuke Fujii - Katsuya Suou - Ulala Serizawa - Daisuke Todoroki (Kyouji Kuzunoha) - Head Monk - Maki Sonomura - Kei Nanjo - Eriko Kirishima - Hidehiko Uesugi - Reiji Kido - Tamaki Uchida - Tadashi Satomi - Trish - Noriko Katayama - Miho Ogishima - Mami Shibata - Miyabi Hanakouji
Masked Circle Tatsuya Sudou - Ginji Sasaki - Anna Yoshizaka - Junko Kurosu - Shadow Tatsuya - Shadow Maya - Shadow Lisa - Shadow Eikichi - Shadow Yukino - Akari Hoshi - Hiroki Sugimoto - Takashi Hanya - Yasuo Inoe - Youichi Makimura
Last Battalion Fuhrer - Order of the Holy Lance
Velvet Room Igor - Nameless - Belladonna - Demon Painter
Rumormongers Kenta Yokouchi - Baofu - Chika Ueda - Sumaru Genie
Shop Time Count - Garcon Soejima - Kankichi Mishina
Climax Theater Motoko Mitsugi - Naozumi Kariyazaki - Musubu Torikiri - Akari Torikiri - Rose Futaba - Minato - Umiko Shiyama - Persephone - Tamaizu Nirasawa - Haruo Weyland - Kushiel
Locations
Sumaru City Seven Sisters High School - Club Zodiac - Kasugayama High School - Air Raid Shelter - Mu Continent - Giga Macho - Aoba Park - Smile Hirasaka - GOLD - Aerospace Museum - Mt. Iwato - Mt. Katatsumuri - Caracol - Aquarius Temple - Taurus Temple - Scorpio Temple - Leo Temple - Silver River - Xibalba - Abandoned Factory - Climax Theater
Music
Albums Original Soundtracks - The Errors of Their Youth - Persona 20th Anniversary All Time Best Album
Songs "Kimi no Tonari" - "Joker" - "Satomi Tadashi Drugstore Song" - "Unbreakable Tie"
Archives
Terminology Persona (Initial / Prime / Ultimate / Reverse) - Persona user - Cards (Tarot / Material / Skill / Incense) - Mystic Change - Affinity - Mutation - Ideal Energy - In Lak'ech - Oracle of Maia - Spear of Destiny - Muses - Phoenix Ranger Featherman R - Shadow Self - Ambrosia - "Infectious Groove" - Crystal Skull - Ideal Self - Growth Rate - Rumor
Lists Arcana - Personas - Demons - Bosses - Skills (Fusion Spells) - Items - Rumors - Restaurants
Other Media
Productions Lost Memories
Publications Innocent Sin (novel) - Persona 2: Tsumi ga Ataeshi Batsu - Persona: Tsumi To Batsu - Comic Anthology: Short Comic Heaven / Innocent Children / Innocent Memory / Comic Anthology (DNA Media Comics)
Major Characters
Playable Maya Amano - Tatsuya Suou - Katsuya Suou - Ulala Serizawa - Baofu - Kei Nanjo - Eriko Kirishima
Non-Playable Philemon - Nyarlathotep - JOKER/Tatsuya Sudou - Metal Trio
Minor Characters
Plot Relevant Maya Okamura - X series robots - Eikichi Mishina - Lisa Silverman - Jun Kashihara - Daisuke Todoroki (Kyouji Kuzunoha) - Takashi Hanya - Youichi Makimura - Ginji Sasaki - Suou's father - Trish - Noriko Katayama - Akinari Kashihara - Shunsuke Fujii - Miho Ogishima - Mami Shibata - Junko Kurosu - Akari Hoshi - Hiroki Sugimoto - Yasuo Inoe - Matsuoka - Yung Pao - Miyabi Hanakouji - Miki Asai - Makoto Kuwahara - Anna Yoshizaka
New World Order Tatsuzou Sudou - Takahisa Kandori - Chizuru Ishigami - General Sugawara - Captain Shimazu - Chief Togashi
St. Hermelin High School Graduates Hidehiko Uesugi - Maki Sonomura - Reiji Kido - Yukino Mayuzumi - Tamaki Uchida - Boy with Earring
Velvet Room Igor - Nameless - Belladonna - Demon Painter
Rumormongers Kenta Yokouchi - Chika Ueda
Shop Time Count - Garcon Soejima - Sumaru Genie - Kankichi Mishina
Shadow Selves Shadow Maya - Shadow Katsuya - Shadow Baofu - Shadow Ulala
Tatsuya's Scenario Lieutenant General Zula - Shiori Miyashiro - Chandraputra - Kouji Nakamura
Locations
Sumaru City Kasugayama High School - The Seedy CD - Mu Continent - Seven Sisters High School - Mt. Mifune - Sanitarium - Sky Museum - GOLD - Club Zodiac - Aoba Park - Padparcha - Sewers - Laboratory - Sumaru TV - Smile Mall - Factory - Nichirinmaru - Undersea Ruins - Mt. Iwato - Subway Tunnel - Ameno Torifune - Sumaru Castle - Monado Mandala - Bomb Shelter - Extra Dungeon
Music
Albums Original Soundtrack (PSX / PSP) - Punitive Dance - Persona 20th Anniversary All Time Best Album
Songs "Change Your Way" - "Satomi Tadashi Drugstore Song"
Archives
Terminology Persona (Initial / Prime / Ultimate / Reverse) - Persona user - Cards (Tarot / Material / Skill / Incense) - Mystic Change - Affinity - Mutation - Unknown Power - JOKER Infection (Artificial Persona) - Kegare - Other Side - Nanjo Group - Trapezohedron - Muses - New World Order - Tien Tao Lien - Shadow Self - Tatsuya's Scenario - DEVA System - Growth Rate - Rumor
Lists Arcana - Personas - Demons - Bosses - Skills (Fusion Spells) - Items - Rumors - Restaurants
Other Media
Productions Infinity Mask
Publications Eternal Punishment (novel) - Persona 2: Tsumi ga Ataeshi Batsu - Persona: Tsumi To Batsu - Comic Anthology: The Atoners / The Unforgivable / The Strays
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