With the exception of "Neo-Spacian Aqua Dolphin", each "Neo-Spacian" monster has the same Type as its "Chrysalis" counterpart.
|Air Hummingbird||N/A||Air Neos||N/A||Chicky|
|Aqua Dolphin||Marine Dolphin||Aqua Neos||Marine Neos||Dolphin|
|Dark Panther||N/A||Dark Neos||N/A||Pantail|
|Flare Scarab||Flare Neos||Larva|
|Glow Moss||Twinkle Moss||Glow Neos||Pinny|
|Grand Mole||N/A||Grand Neos||Mole|
Unlike most Fusion Monsters, which must be Fusion Summoned, most "Neos" Fusion Monsters are instead Summoned via Contact Fusion, which only requires the Fusion Materials to be on the field. However, the "Neos" Fusion Monsters (specifically the ones that fuse "Neos" with the "Neo-Spacians") also have an effect that returns themselves from the field to the Extra Deck during the End Phase. To avoid this, the Field Spell Card "Neo Space" allows the Fusion Monsters to stay on the field as long as "Neo Space" does, and the Equip Spell "Instant Neo Space" allows the equipped Fusion Monster to stay on the field (as well as allowing the Special Summon of "Elemental HERO Neos" when the equipped monster leaves the field). There are the 6 primary "Neos" Fusion Monsters, 4 Summoned via Triple Contact Fusion ("Chaos", "Magma", "Storm", and "Nebula") and one summoned via Quadruple Contact Fusion ("Cosmo") for a total of 11.
A good card to include is "Elemental HERO Prisma". It can send "Neos" to your Graveyard and have its own name treated as "Elemental HERO Neos". You can then use it for the Summon of a "Neos", or use cards like "Wrath of Neos" on it. You can also use cards like "Birthright" and "O - Oversoul" to Special Summon "Elemental HERO Neos" from your Graveyard. Note that "Neo-Spacians" have low ATK, so a Contact Fusion is optimal over just leaving on the field.
"Miracle Contact" is one of the decks' best card, as it can access your hand, your side of the field, or your Graveyard for the monsters you need to Special Summon your "Neos" Fusion Monsters (however, any monster Summoned by "Miracle Contact" does not count as properly Fusion Summoned, so they cannot be Special Summoned again through other cards or effects such as "Monster Reborn").
"Contact Out" is especially useful in avoiding card effects that force your monsters to leave the field (such as those of your own "Neos" monsters), and can allow for multiple attacks after your original Fusion Monster has attacked.
"Elemental HERO Neos Alius" is a Gemini monster whose effect allows him to be treated as if his name was "Elemental HERO Neos." This is very useful in a "Neo-Spacian" Deck, as it gives you the option of having more than three "Neos" to use in Contact Fusion. It is also a Level 4 monster with 1900 ATK. Given that "Neos Alius" is a Gemini monster, he can be supported by cards like "Supervise" and "Gemini Spark". One popular strategy is to stick exclusively to arguably the most useful "Neo-Spacians": "Dark Panther", "Grand Mole", "Air Hummingbird" and "Flare Scarab".
"Neos Fusion" allows you to quickly Special Summon a "Neos" Fusion Monster by sending materials from your deck to the graveyard. This is essential in this deck as it allows you to set up your field quicker and by using less resources (it can also be easily searched by "Keeper of Dragon Magic"). It also allows you to protect a "Neos" fusion by banishing itself from the graveyard to prevent battle or effect destruction or the last effect of every primary fusion that returns itself to the Extra Deck. Bare in mind, however, that the usage of this card has a significant drawback in not allowing you to Special Summon for the rest of the turn.
"Neo Space Connector" is a monster that allows you to Special Summon a "Neo-Spacian" or "Neos" straight from the deck. You can then tribute her to Special Summon either "Neos" or a "Neo-Spacian" from your graveyard allowing for quick and easy Contact Fusions.
As for the "Neo-Spacians" themselves one of their best support cards is "Convert Contact" which allows you to send two "Neo-Spacians" (one from your hand, one from your deck) to the graveyard then draw 2 cards. This is excellent for loading up your graveyard for the effect of "Contact Gate" or for a "Triple Contact Fusion" so it's best to send them in pairs. Their other excellent support card is "NEXT" which can be activated from the hand and allows the user to Special Summon "Elemental HERO Neos" and/or "Neo-Spacian" monsters with different names. Incredibly useful for recovery tactics and for preventing your opponent from easily wiping you out as tends to be the case with this deck.
Neo-Spacian Draw Engine
While the original purpose of the "Neo-Spacians" is to Contact Fusion with "Neos", with cards like "Convert Contact", "Cross Porter" and "Space Gift", they've become an interesting Draw Engine, Deck Thinner and Graveyard Filler disregarding "Neos".
"Convert Contact" is the key card, thinning your Deck by 3 cards and sending two monsters to the Graveyard (one of your choice) without making you lose hand advantage. The other key card, "Cross Porter" can be used to keep hand advantage, as it can be easily sent to the Graveyard with cards like "Armageddon Knight", "Foolish Burial" or "Dark World Dealings". If revived (even with cards like Junk Synchron), it can provide an extra Neo-Spacian.
Once in the Graveyard, these monsters can then be used for different purposes, like the Special Summon of "Dark Simorgh"/"Chaos Sorcerer" or using cards like "The Beginning of the End". Since both "Cross Porter" and "Armageddon Knight" are low-level DARK Warrior monsters, and there is one DARK Neo Spacian and one Warrior Neo Spacian, cards that support DARK monsters (like "Dark Eruption"/"Allure of Darkness") and Warrior monsters (like "Reinforcement of the Army") work quite well.
The first known competitive Deck to use this Engine was Junk and Debris Deck.
The main weakness of the "Neo-Spacians" is that their Fusion Monsters return to the Extra Deck during the End Phase of the turn. Relying on Field and Equip Spell Cards to keep monsters on the field can be easily thwarted with cards such as "Dust Tornado" and "Mystical Space Typhoon". This is somewhat mitigated with the "Neos" Fusion Monsters that require three materials as they have powerful effects that activate when they return to the Extra Deck. "Contact Gate" also helps by Special Summoning a "Neo-Spacian" when the monster returns but this only goes part of the way to solve the problem. The main way around this flaw is by using "Contact Out" to Special Summon the specific Fusion Materials listed on the card so that you can hit your opponent for more damage or Contact Fuse something different. Alternatively, you can banish "Neos Fusion" from your GY to prevent the monster from going back into the Extra Deck. This effect can also be used to protect the monster from battle and destruction effects, similar to "Return of the Dragon Lords".
"Neo-Spacians" are fairly weak on their own, with no specific support cards. Since "Elemental HERO Neos" is a Level 7 Normal Monster, specific cards to Summon it are needed such as "O - Oversoul", "Neo Space Connector" or "NEXT".
|/Assault Modes||Colossal Fighter / Red Dragon Archfiend||Hyper Psychic Blaster / T.G. Halberd Cannon||Doomkaiser Dragon||Arcanite Magician||None Yet||Stardust Dragon|
Summoners (Normal Spell Cards)
|Moonface the Silver
|Leon the Lead
|Salamandra the Steel
|Ouroboros the Bronze
|Ekenas the Mercury
|Aretos the Tin
Tin Spell Circle
|Aliens||Overlord / Mother / Psychic||Shocktrooper / Infiltrator / Warrior||Mars / Telepath||Ammonite / Dog / Grey / Kid / Shocktrooper Mighty/Frame||Hunter / Hypno||Skull|
|Altergeists||Primebanshee / Kidolga / Multifaker / Fifinellag / Dragvirion||Kunquery||Hexstia||Marionetter||Meluseek||Silquitous / Pixiel|
|Aroma||None Yet||Cananga||Bergamot||Jasmine / Angelica / Rosemary||Rosemary||Jar|
|Attribute Boosters (500 ATK▲/400 DEF▼)
(500 ATK▲/500 DEF▲)
(500 ATK▲/400 DEF▼)
(400 ATK▲/200 DEF▼)
Wee Witch's Apprentice
Mystic Plasma Zone
Sword of Dark Destruction
Rising Air Current
|Attribute Reptiles||Umbral Soul||Raging Earth||Firestorm Prominence||Radiant Spirit||Silent Abyss||Destruction Cyclone|
|Attribute Summoners||Mystic Tomato||Giant Rat||UFO Turtle||Shining Angel||Mother Grizzly||Flying Kamakiri #1|
|B.E.S.||Big Core||Covered Core||Big Core MK-2||Big Core MK-3||Crystal Core||Tetran|
Advanced Contact Fusions
|Code Talkers||Code / Decode / Decode Extend||Transcode||Powercode||Code Invert / Encode||Shootingcode||Excode|
Black Dragon Ninja
|Senior Silver Ninja
Red Dragon Ninja
|White Ninja / Upstart Golden Ninja
White Dragon Ninja / None Yet
Blue Dragon Ninja
Yellow Dragon Ninja
|Cubic||Vijam / Crimson Nova / Crimson Nova Trinity||Dark Garnex||Blade Garoodia||Duza / Buster Gundil / Indiora Doom Volt||None Yet||Geira Guile|
|Dice Roll Archfiends||Terrorking||Vilepawn||Infernalqueen||Desrook||Darkbishop||Shadowknight|
|The Trojan Horse
|Kaiser Sea Horse
|Star||Yellow||Red||House / White||Blue||Green|
|Elemental HERO Fusion Monsters
(1 "HERO" + 1 matching Attribute)
|Escuridao||Gaia||Nova Master||The Shining||Absolute Zero||Great Tornado|
Lapauila / Lapauila Mana
|Ghost Girls||Ghost Reaper & Winter Cherries||Ghost Belle & Haunted Mansion||Ash Blossom & Joyous Spring||Ghost Ogre & Snow Rabbit||Null Nun & Blooming Dogwood||None Yet|
(Equip Spell Cards)
|Baou / Dreadscythe
Wicked-Breaking Flamberge / Reaper Scythe
Shooting Star Bow
Twin Swords of Flashing Light
Rod of Silence
|Elma / Eatos
Buttefly Dagger / Celestial Sword
|Invoked||Caliga||Magellanica||Purgatrio||Mechaba / Elysium||Cocytus||Raidjin|
|Kaiju||Radian||Kumongous||Dogoran||Jizukiru / Mecha-Dogoran / Thunder King||Gameciel||Gadarla|
|Legendary Planets||Jupiter / Saturn / Pluto / Sun||Terra Firma||Mars||Venus / Uranus||Mercury / Neptune||None Yet|
Level 6 Fusion Monsters
Level 8 Fusion Monsters
Related "Monarch" Spell/Trap Cards
|Caius / Erebus
Caius the Mega
Tenacity / The First
Lucius / Eidos
Granmarg the Mega
Thestalos the Mega
|Zaborg / Ehther
Zaborg the Mega
Strike / The Prime
Mithra / Edea
Mobius the Mega
Raiza the Mega
|Musical Djinns||Maestroke||Temtempo||None Yet||Melomelody||Humhumming||Muzurhythm|
|Mythyrian Numbers||Djinn Buster||Lion Heart / Ronin Raccoon Sandayu||None Yet||Sky Pegasus / Dragluon||Abyss Splash / Crystalzero||None Yet|
Umbral Horror Masquerade
Giant Red Hand
|Battlin' Boxer Star Cestus
Battlin' Boxer Comet Cestus
|Star Seraph Sentry / Masquerade / Galaxy-Eyes Tachyon Dragon
Archfiend Seraph / Neo Galaxy-Eyes Tachyon Dragon
|Silent Honor ARK / Ragnazero
Silent Honor DARK / Ragnafinity
|Odd-Eyes Dragons||Odd-Eyes / Pendulum / Rebellion / Raging / Phantom / Persona / Mirage / Supreme King / Venom / Wing / Performapal Metal Claw / Arc Pendulum / Advance||Gravity||Meteorburst||Saber / Lancer / Revolution||Absolute||Vortex|
|Pendulum Magicians||Stargazer / Timegazer / Xiangke / Timebreaker / Acrobatic / Dragoncaller / Harmonizing / Double Iris / Black Fang / Purple Poison||Dragonpulse||Nobledragon||Xiangsheng / Wisdom-Eye / Dharma-Eye / Performapal Five-Rainbow||Dragonpit||Oafdragon / White Wing|
|Prediction Princesses||Astromorrigan||Coinorma / Petalelf||None Yet||Tarotrei||Crystaldine||Arrowsylph|
|Resonators||Dark / Synkron||Clock||Flare / Red / Double / Net||Barrier / Chain / Mirror||Force||Creation|
(1 "Shaddoll" + 1 matching Attribute)
|Signer Dragons||Red Archfiend / Black-Winged||Life Stream||Black Rose||Ancient Fairy||None Yet||Stardust|
Legendary Six Samurai
Secret Six Samurai
|Sky Striker Ace||Raye||Kaina||Kagari||None Yet||Shizuku||Hayate|
|Nitro / Jet
Nitro / Jet
(Continuous Spell/Trap Cards)
|Thunder / Rainbow
Thundery / Rainbowy
|True Draco and True King||All Calamities||Lithosazim / Dreiath III||Agnimazud / Ignis Heat||Metaltron XII / Master Peace / King Master Peace||Bahrstos / Dinomight Knight||Mariamne / Majesty Maiden|
|World Legacy - "World Chalice"
|Beckoned by the World Chalice
Ningirsu the World Chalice Warrior
|Chosen by the World Chalice
Auram the World Chalice Blademaster
|Lee the World Chalice Fairy
|Crowned by the World Chalice
Ib the World Chalice Priestess
|World Chalice Guardragon
Imduk the World Chalice Dragon
|Jiaotu / Taotie
|Bi'an / Zefraxi / Zefraniu||Suanni||Chiwen
Baxia / Chaofeng / Denglong