Demon Fusion

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Demon fusion is the combining of multiple demons to form a new demon. In order to fuse demons you must speak with the "Master of the Cathedral of Shadows". Cathedral of Shadows can be found in every town, marked by a pentagram on your map. When speaking to the Master, you will see two fusion options, "Double Fusion" and "Triple Fusion". Double Fusion simply requires yourself and two demons, note that you cannot fuse two of the same demon together. Triple Fusion is a little trickier, but you can get rarer demons otherwise unobtainable through normal game play. It requires a party of three people, each one must sacrifice a single demon, and only the one who begins the fusion obtains the new demon.

After choosing the demons you wish to fuse, you will be taken to a screen that shows which demon you will get with the fusion, the skills it will inherit, the cost of the fusion, and the percent chance of success. If a fusion fails, you do not lose your demons, instead you simply lose the fusion fee. You can attempt to fuse your demons until you succeed, run out of money, or get tired of trying.

Advanced Information

Double Fusion

Demon fusion for double fusion is very simple to understand, with a bit of thinking. First off; One family plus another family will always equal another family. For instance, Fairy + Earth Element will always yield a Wilder demon. The combinations are set in stone for this, so check the double fusion table below.

To figure out which demon it is, the 'fusion range' must be used. The fusion range is calculated through levels of demons in a family. Jack Frost's is 4-21. The way that this is calculated is:

Fusion Range = (Previous Demon Level x2) to ((Demon Level x 2)-1)
  • In both parts, the level used is the current level (NOT the race's starter level);
  • Previous Demon means the previous demon in the Race. See the list of demons for each race to know.

In Jack Frost's case, this is Pixie. Pixie's level is 2. So 2x2 = 4. That's the minimum combined level of the two demons being fused in order to yield a Jack Frost. Jack Frost's level is 11, so 11x2 = 22 - 1 = 21. This makes 21 the maximum fusion range for Jack Frost. Now, if the demon is first in the family, the minimum level would be 2. If it is the last, the maximum would be 200.


So, lets say one wanted a Bicorn. This is how one would figure it out.

1.) Find a family combination that yields wilder.

2.) Find the Fusion Range of Bicorn (found on the demon's page)

3.) Find demons from the two demon families you chose whose levels get you in the fusion range or under it.

4.) Calculate the levels needed in order to yield Bicorn if their combined levels do not automatically sit inside the fusion range.

1.) Fairy + Earth Element = Wilder.

2.) 18-33

3.) Sudama (17) + Pixie (2) = Bicorn. (17 + 2 = 19. 19 is in-between 18 and 33.)

4.) Not needed.

The fusion cost is also really simple to calculate:
Fusion cost = round down((Resulting demon level)^2 / 2)
Special Double Fusion

These double fusion will ignore all rules (including level):

Triple Fusion

Triple fusion is a three-way combination of three demons to yield one demon. Three players offer one of their demons at or above Good Friends. If the fusion works the host receives the demon and the other participants usually receive compensation through macca or other means.

  • Only the host gets the result; participants receive compensation from the host.
  • Players who submit a demon at Linked by Fate status may receive their crystal afterwards.
  • As in double fusion, the level bracket of the result is the average of the input demons.
  • In some special fusion combinations (such as Loki, Odin and Thoth) the levels are ignored.
  • Like double fusion, every specific combination of input families will result in the same resulting family.
  • It is possible to perform a solo tri-fuse in Ikebukuro's Cathedral of Shadows if possessing a Raktavija's Bloodstone (demons need to be Linked By Fate, one stone is consumed whether success of failure).


By the use of a Plugin, some fusion combinations will result in a different demon.

  • The HOST requires the plugin, the other two participants do not.
  • For Plugin-based fusions the levels of the fusion fodder demons are ignored.
  • Plugins can't be disabled. The fusions that plugins apply to will override the normal fusions.

Inherited Skills

Inherited skills are skills that a fused demon obtains from its parent demons. Before fusion you will see an orange bar filled to varying degrees, this is how well your new demon will know these spells from the beginning. If a skill is not mastered from the start, learning them is very simple. Your demon simply has to experience and/or use the skill to gain more knowledge in it.

If your demon has only learned "Mediarama" to 37%, simply heal your demon to increase the level until mastered. If it has "Maragion" at 52% simply let your demon get hit by fire-based skills to raise it, or have the demon use a different fire-based skill. Note that higher level skills will raise your demon's experience faster. An example being: A Pyro Jack using "Agi" on your demon that is training "Maragion" will raise it much slower than an Oberon using "Heat Wave". These bonuses stack--if a demon both casts and is affected by a skill (e.g. media), other skills of that affinity (e.g. mediarama) will go up at double rate.

Demon Fusion Charts

Double Fusion

The family of the resulting demon is given by the families of the two fused demons. For example, a Fairy and a Yoma are fused into an Earth Element.

The level of the resulting demon is given by the mean of the levels of the two fused demons. For example, a level 22 Pyro Jack and a level 23 Dis give a level 23 or above Goddess: a level 24 Ame-no-Uzume. The level of the resulting demon is always the default level for this demon.

Element demons can be created by the fusion of two demons of the same familly. For example, two Earth Element demons can be fused to create Erthys.

NB: The fusion with an Element demon is different and is described in the next section.

How to read the double fusion chart

Demons are divided into three groups according to their alignment. Each alignment is given a color. In an alignment group a demon family is given a number, the same number used in the Demonic Compendium as paragraph number. For example, Wild Bird is designated by an  8  on blue background, and Dragon is a  6  on red background.

The result of a fusion is given by the number and the background color of the cell shared by the row of the first demon and the column of the second demon. For example, the fusion of a Wild Bird ( 8  on blue) and a Dragon ( 6  on red) is given by a  2  on blue background : an Heavenly God.


  • Only part of the table is filled. When the resulting cell contains a minus sign, reverse the order of the demons. (It is possible that you get an answer that way.) If even in reversed order there are only minus signs then the answer is still unknown.
  • An empty colored cell stands for an Elemental Fusion
  • A wheat colored cell stands for a fusion between 2 demons of the same family, giving an Element demon. The cell contains the 2 first letters of the resulting Element name : Er, Ae, Aq or Fl.
  • A 'X' letter stands for an impossible fusion

Elemental Fusion

Fusions with Element demons affect the level of the non-Element demon: the demon is either leveled up or leveled down. For example, the fusion of a Pixie with an Erthys gives a Jack Frost, but a Archangel and an Erthys give a Angel. Some combinations do not change the non-Element demon, but its level will be lowered to the default.

How to read the double fusion chart

  • A plus sign stands for a level up fusion : +
  • A minus sign stands for a level down fusion : -
  • A slash stands for a null fusion : /

Fusion Tool

* Originally Created by: Akukame / Kesara
* Updated by: Archknight, ShadowArc (06/2010)
*         and TLH (04/2012)
*   Version 0.37 Changes:
*       Activated Crisis
*      Added Astaroth, Metatron, Nightmare & Lillim (The Little Devil)
*      Changed Trifusion handleing on reverseTab, now shows Plugin/Demon infos
*      Added Gem (Crystalizion) to DemonFamilies
*      Renamed 'Houou' to 'Feng Huang'
*              Changed 'Raiju' to Trifusion since requires (not released plug) to perform Double-Fusion
*         PreImplemented Fusion-Fix (Raiju is build from Inugami+Nue with Plugin)
*      Renamed 'Ongyu-Ki' to 'Ongyo-Ki'
*      Fixed Alignment-bugs
*      Implemented 'Lilim the little Devil' + Fix to show its fusion
*              Implemented 'Pursuit of the Inexperienced' v1-8 Demons, Shiva & Vishnu
*              Implemented 'Infinite Snake' Plugin (Ananta)
*      Fusions not yet known...: Vishnu
*   Version 0.36 Changes:
*      Morrighan corrected (Macha+Badb Catha shows Morrighan instead of Elemental now)
*      PreImplemented Efreet
*      Added Infos when Elemental fusions can't be UPed or DOWNed since Family limits are reached
*   Version 0.35 Changes:
*      Added Demons (Ongyu-Ki, Void)
*              Pre-Added Demons (Crisis, Black Frost)
*              Changed name of 'Qilin' to 'Kirin'
*      Fixed Elemental-fusions (Up-/Downleveling to as trifusion marked demons)
*   Version 0.34 Changes:
*      Added Elementary fusions to Demon+Demon fusion
*         Element+Demon (Aquans/Erthys/... + RandomDemon)
*         2 Demons of one family to create elementals (Alp+Empusa = Erthys)
*              Fixed Bug in fusiontable
*      Added Null-fusions to Forward-Elemental table
*      reWorked the 'You can't fuse a demon with itself'-error
*   Version 0.33 Changes:
*      Added Kin-Ki, Sui-Ki and Fuu-Ki
*              Added global variable 'DEMON_MAX_PER_FAM' to Main/Family units - needed to raise demons per family limit for Kin-, Sui- & Fuu-Ki
*              Fixed wrong min-Level-bug appearing when reversing Yata-Garasu
*      ReverseTab: Resultbox is now cleared when StartingDemon is changed
*   Version 0.32 Changes:
*      Fixed CutOff bug which caused refresh to freeze (Top level demon of each Family needs to be higher than the highest possible fusion level ingame)
*   Version 0.31 Changes:
*      Added Tao Tie
*      Fixed Bug with Fusions above Zhu Que in his family
*   Version 0.30 Changes:
*      Bugfix for v0.28 bugfix ;)
*   Version 0.29 Changes:
*      Fixed 'fusion impossible'-bug, Now Nocturne+Nocturne gives Erthys and Alp+Alp returns a new error (..dont fuse a demon with itself..)
*   Version 0.28 Changes:
*      Fixed a bug where for some reason an array out of bounds exception was being generated. I am not even sure if the results that it shows still make sense with this correction.
*   Version 0.27 Changes:
*      Fixed double-fusion-bug (Aello+Aello,..)
*      Lowered impossiblity-filtering (Caith Sith wasn't fuseable until rebirth, ..)
*   Version 0.26 Changes:
*      Fixed wrong demon align sorting (LAW->NEUT/NEUT->LAW)
*      Added last missing demons
*      Excluded Trifusion demons from double fusion listing
*   Version 0.22 Changes:
*      Fusion by Family: corrected Demon aligns
*      General:
*         Added new demons and new family (Destroyer - Chaos) to DB
*         Elementary fusions are now shown
*                      Replaced internal fusion table with new one in order of aerias wiki
*   Version 0.21 Changes:
*      Fixed my screw up in regards to having a cool looking gui. that's it....
*   Version 0.20 Changes:
*      Name fixes
*      Fusion formula fixed
*      Window re-sized to accommodate new additions
*      Reverse tab no longer resizes the program window due to scrolling implemented
*      Elemental reference charts added
*      Notes tab added to keep track of temporary things, it doesn't save info however

Download can be found here

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