"Earthbound Immortal", known as "Earthbound God" (
"Earthbound Immortals" are based on the Nazca Lines. Each of them are pictured rising from their corresponding Line and their form matches the being they represent, as well as their Type. The "Earthbound Immortals" also each have a color of the rainbow.
They are among the largest monsters seen in the anime; dwarfing humans and being comparable to massive buildings in size.
The Earthbound Immortals are the evil incarnations that were sealed away in the underworld by the Crimson Dragon and its servants 5000 years before the events of Yu-Gi-Oh! 5D's. These malicious entities were released as a result of the Zero Reverse incident. They serve as the ace monsters of the Dark Signers, possessing them to serve as gatekeepers of Old Ener-D, which serves as the entrance of the underworld.
|Color||Earthbound Immortal||Unique effect||Basis||Dark Signer|
|Red||Uru||Once per turn: You can Tribute 1 other monster, then target 1 face-up monster your opponent controls; take control of that target, until the End Phase.||Spider||Roman Goodwin|
|Orange||Aslla piscu||When this face-up card leaves the field, except by its own effect: Destroy as many face-up monsters your opponent controls as possible, and if you do, inflict 800 damage to your opponent for each monster destroyed.||Hummingbird||Carly Carmine|
|Yellow||Cusillu||If this card would be destroyed by battle, you can Tribute 1 other monster instead, and if you do, halve your opponent's LP.||Monkey||Devack|
|Green||Ccarayhua||If this card is destroyed by a card effect, except by its own effect: Destroy all cards on the field.||Lizard||Misty Tredwell|
|Blue||Ccapac Apu||If this card destroys an opponent's monster by battle: Inflict damage to your opponent equal to the destroyed monster's original ATK.||Giant||Kalin Kessler|
|Indigo||Chacu Challhua||Once per turn: You can inflict damage to your opponent equal to half this card's DEF. This card cannot attack during the turn you activate this effect. While this card is in Defense Position, your opponent cannot conduct their Battle Phase.||Killer whale||Greiger|
|Violet||Wiraqocha Rasca||If this card is Normal Summoned: Target up to 3 cards you control, except this card; shuffle those targets into your Deck, then discard as many random cards from your opponent's hand as possible, but not more than the number of returned cards, and if you do, this card gains 1000 ATK for each card discarded by this effect.||Condor||Rex Goodwin|
The "Earthbound Immortal" monsters are very powerful and have effects that range from inflicting Effect Damage to your opponent while locking their Battle Phase ("Chacu Challhua"), to taking control of an opposing monster, as in the case of "Uru". Also, all of them can attack their opponent directly and cannot be targeted for attacks.
As powerful as they are, they have some drawbacks: there cannot be more than 1 "Earthbound Immortal" monster on the field at the same time. They are also destroyed if there is no Field Spell Card active, much like cards in the "Malefic" archetype.
If "Hardened Armed Dragon" is Tributed to Tribute Summon an "Earthbound Immortal" monster, it prevents it from being destroyed by card effects (including its own). Alternately, "Earthbound Linewalker" can be used to protect "Earthbound Immortal" monsters. "March of the Monarchs" will also stop them being destroyed by their own effects, as will the effect of "Number 66: Master Key Beetle". In an emergency situation, "Skill Drain" can also prevent them from destroying themselves.
Their strategy basically relies on attacking directly and dealing huge damage every turn; if they are protected by cards like "Safe Zone" or "Mound of the Bound Creator", there are few ways of stopping them. "The Seal of Orichalcos" also works well in this Deck, as it can protect itself while boosting your monsters' ATK by 500. "Terraforming", and even "Ancient Fairy Dragon" if used carefully or alongside "Field Barrier"/"The Seal of Orichalcos", can assist in making sure you always have Field Spell(s). "Ancient Pixie Dragon" can also be included to increase draw power as this deck relies on Field Spells.
Another strategy is to use "Mausoleum of the Emperor" (protected by "Field Barrier") with "Prohibition" blocking Spell and Trap removal cards such as "Mystical Space Typhoon", "Twin Twisters", and "Dust Tornado". This can also be supplemented by "Dark Bribe", "Magic Jammer", "Seven Tools of the Bandit", "Ultimate Providence", and "Earthbound Wave", and "Trap Stun" in more desperate conditions.
The "Earthbound Immortal" monsters can all be Summoned easily with enough effort put in, as they have no restrictions on Special Summoning them (except the field-unique condition).
Because they depend on Field Spell Cards being on the field, cards like "Ancient Fairy Dragon", "Black Rose Dragon" and even "Mystical Space Typhoon", "Twin Twisters", etc. can cause "Earthbound Immortal" monsters to destroy themselves. Cards like "Field Barrier" or "Malefic Stardust Dragon" can be used to protect a Field Spell Card from being destroyed, but the latter means that the direct attacking effects can't be utilized. This is because Malefic cards are the only monsters that can attack while on the field.
Cards that cause the Field Spell Card to leave the field without destroying it (such as "Shaddoll Dragon" and "Castel, the Skyblaster Musketeer") are still a threat even with "Field Barrier" or "Number 66: Master Key Beetle". This can cause additional problems if "Field Barrier" is in play, as it prevents a new Field Spell Card being played while it is active.
- Some fans of the show and players of the trading card game get confused on how to pronounce "Ccapac Apu" and "Ccarayhua's" names due to the double C.
- The first C is pronounced "co".
- "Wiraqocha Rasca" would have originally gone to Crow as the final Dark Signer, as it fit with his already avian-themed Blackwing Deck. However, it ended up going to Rex Goodwin instead due to how popular the "Blackwing" archetype had become among the fans.