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Fusion Monsters (Japanese:
To be Summoned, Fusion Monsters require the player to have the Fusion Material Monsters listed on the Fusion Monster in the hand or on their side of the field or in some cases, the Deck, Graveyard or the opponent's side of the field. Then they would need to activate a card effect, such as those in Polymerization, that allows the player to Fusion Summon.
Like other Extra Deck monsters, Fusion Monsters cannot exist in the hand or Main Deck (even with card effects). If a Fusion Monster would be moved to the hand or Main Deck, it is returned to the Extra Deck instead. If a card like "Transmigration Break" or "Degenerate Circuit" is applying, this will override the Fusion Monster's ability to return to the Extra Deck.
Like other Extra Deck monsters, if a Fusion Monster is not Fusion Summoned first, it cannot be Special Summoned from the Graveyard or while banished (unless it specifies another way to properly Special Summon it).
There are few Fusion Monsters that have special Summoning Conditions. For example, the "Elemental HERO" Fusion Monsters have a clause stipulating that they may 'not be Special Summoned unless they are being Fusion Summoned'. This also rules them out from being Special Summoned either from the Graveyard or when banished. Others may not allow the use of Fusion Substitute Monsters,and require the original fusion materials, as in the case of Rainbow Neos.
Originally, the only way to properly summon a Fusion Monster was through a Fusion Summon involving the required Monster Cards and the Spell card Polymerization. There are now many different ways to Fusion Summon a monster and many different cards that allows the player to Fusion Summon.
With Duel Terminal - Pulse of the Trishula, Fusion Monsters have started to come back, starting with "Naturia Exterio". In Duelist Revolution, Starstrike Blast and The New Challengers, 5 more Fusion Monsters were added: "Ultimate Axon Kicker", "Dragon Knight Draco-Equiste", "Gaia Drake, the Universal Force", "Supreme Arcanite Magician", and "Naturia Gaiasteleoh". These six Fusions are the next evolution of Fusion Monsters. The first evolution was the standard Fusion, requiring two regular Monsters, such as with "Flame Swordsman". The second evolution of Fusions Monsters require at least one other Fusion Monster, such as "Dragon Master Knight". The third and currently most commonly used evolution requires at least 1 Synchro Monster such as "Gaia Drake, the Universal Force".
As of Duelist Alliance, it was announced that Fusion, Synchro, Xyz, and Ritual monsters would be getting an equal amount of support, and since then, Fusion Monsters have been plentiful in core booster sets, sometimes even outnumbering the other two Extra Deck types.
In the anime
According to the anime, the Millennium Scale was the item which originally fused monsters. In the Yu-Gi-Oh! they were used on occasion. Early Fusion Monsters were insignificant in terms of ATK and DEF and very few had effects until Yu-Gi-Oh GX, when many fusion cards and many powerful Fusion Monsters were introduced. In Yu-Gi-Oh 5D's, Synchro Monsters appear to have filled this position. However, Fusion Monsters have been used a few times, most notably by Jack in his Duel against Yusei, and Yusei in his Duel against Jean. In Turbo Duels, "Speed Spell - Speed Fusion" is the substitute for "Polymerization". In Yu-Gi-Oh! ZEXAL Kite used the Fusion Monster Twin Photon Lizard against Shark, while Roku has not yet used Xyz Monsters, using "Blue-Eyes Ultimate Statue Dragon" and "Arcana Knight Joker".
In the original and R manga, Fusion Summoning and Fusion Monsters are different, the Fusion Material Monsters must exist on the field to be fused with "Polymerization," and once fused, they are still treated as seperate cards for the purpose of specific card effects (most famously, "The Wicked Eraser," which treated the three-material "Arcana Knight Joker" as three cards and gained 3000 ATK from the total.) In addition, they can also be treated as a number of Tributes equal to this total, and as demonstrated in Yu-Gi-Oh! R, less than the total can be Tributed (Seto Kaiba sacrificed the "Material Bat" and "Material Scorpion" portions of his "Mosaic Manticore" while leaving "Material Lion" on the field.) However, the Fusion Materials can also be Summoned while the Fusion Monster is on the field, again demonstrated in R when Yako Tenma Summoned 3 "Blue-Eyes White Dragons" with "Junk Dealer" while Seto Kaiba had his "Blue-Eyes Ultimate Dragon" on the field. They are treated as having a Level equal to the highest Level of the Fusion Material Monsters ("Mosaic Manticore," made up of of the Level 4 "Material Lion," "Material Bat" and "Material Scorpion," was treated as Level 4, while "Beast Machine King Barbaros Ur," composed of the Level 4 "Machine Lord Ur" and the Level 8 "Beast King Barbaros" was treated as a Level 8 monster.) They also lack the ability to attack during the turn they are Summoned under the "Super-Expert Rules" (a condition carried over to the second and third seasons of the second series anime.) However, Fusion Monsters that were Fusion Summoned without "Polymerization," like "Valkyrion the Magna Warrior," "XYZ-Dragon Cannon," and "Mosaic Manticore" are not subject to this condition. However, as with all the other rules, Fusion Summoning and Fusion Monsters were changed to match the TCG/OCG for the subsequent GX and 5D's manga. In addition, any effects they possess are usually similar to those of their Fusion Materials.
List of cards to properly Fusion Summon a Fusion Monster
And a few ways to Special Summon a Fusion Monster:
- "Re-Fusion" to Special Summon a Fusion Monster from the Graveyard.
- The "Neos" and "Gladiator Beast" archetypes use "Contact Fusion".
- The "VWXYZ" archetype and "Armityle the Chaos Phantom" use a different type of "Contact Fusion", where the Fusion Material Monsters are banished.
- Chimeratech Fortress Dragon's Special Summon can be seen as a variation of "Contact Fusion", where the Fusion Material Monsters are sent to the Graveyard and you can use your opponent's monsters for the Summon.
- The "Hex-Sealed Fusion" Monster Cards ("The Earth - Hex-Sealed Fusion", "The Dark - Hex-Sealed Fusion", "The Light - Hex-Sealed Fusion")
Like Yu-Gi-Oh!, Fusion Monsters in Yu-Gi-Oh! BAM have purple-colored background. But unlike the real TCG, Fusion Monsters can be played independently, or can be overlayed with an existing monster to produce a new Monster hidden within that Card. Fusing 2 monsters together will trigger an effect aside from creating a new Monster (i.e.: Gaining Life Points, Inflicting Damage, etc.). When the Fusion Monster produced is destroyed, the two materials used for Fusion are also destroyed.