"Neos" (ネオス Neosu) is an archetype of cards, the principal one being "Elemental HERO Neos", used by Jaden Yuki in the Yu-Gi-Oh! GX anime. "Elemental HERO Neos" works with the "Neo-Spacians" to Summon powerful Neos Fusion Monsters via Contact Fusion. Most "Neos" Fusion Monsters have an improved version of the effect of the corresponding "Neo-Spacian" Fusion Material Monster.
In the TCG, due to several "Neos" cards including "Neo Space" in their TCG name instead (and "Neo Space" cards exclusively being "Neos" cards), "Neo Space" is considered a separate archetype from "Neos", but is supported by all cards that support "Neos" cards that could also affect "Neo Space" cards, such as "Elemental HERO Divine Neos".
"Neo-Spacian Aqua Dolphin" appears as a character in World Championship 2007 and in World Championship 2008, "Air Hummingbird" appears in World Championship 2007, both "Dark Panther" and "Neo Space Pathfinder" appears in World Championship 2008, "Grand Mole" appears in World Championship 2007 and in Yu-Gi-Oh! Duel Arena, and "Darkness Neosphere" appears in World Championship 2010.
Many of this archetype's members are Fusion Monsters that are Summoned by using "Elemental HERO Neos" and a "Neo-Spacian" monster as Fusion Material.
|Dolphin||Aqua Dolphin||Marine Dolphin||Aqua Neos||Marine Neos|
|Pinny||Glow Moss||Twinkle Moss||Glow Neos||N/A|
|Chicky||Air Hummingbird||N/A||Air Neos|
|Pantail||Dark Panther||Dark Neos|
|Larva||Flare Scarab||Flare Neos|
|Mole||Grand Mole||Grand Neos|