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For those who have not completed games in the 异度神剑 series, this page contains spoilers regarding the plot. Discretion is advised. |

Cole, a failed Flesh Eater
Flesh Eaters are a special kind of Blade in 异度神剑 2. They have been fused with 类人型 cells in an attempt to make them more powerful and give them unique abilities. Flesh Eaters are mainly a product of the lost kingdom of Judicium.
They are able to wield their own Blades, and are able to stay manifested after the deaths of their own Drivers. However, the process of creating a Flesh Eater is rarely successful, with many ending up like Cole, without any Blade powers and gaining aging bodies.
Flesh Eaters can be easily identified due to the red "stains" on their Core Crystals and that of their manifested 武器. One exception is Jin, whose Core Crystal became completely red when he turned into a Flesh Eater. His method of transformation was different as Jin took Lora's heart and forced it upon himself. When becoming a Flesh Eater, Blades may lose their immortality, but still possess large lifespans.
Known Flesh Eaters
Blade Eater

Amalthus creates a Blade Eater
Although similar, Blade Eaters are a different type of entity. They are 人类 who have been fused with part of a Blade's Core Crystal. Blades who have been eaten lack part of their Core Crystals, which usually split in a non-regular shape, as can be seen in Pandoria's or Fan la Norne's crystals.
Blade Eaters have a significantly longer lifespan than a regular human. Some Blade Eaters, like Mikhail, have lived for centuries, and are able to use their 武器 as if they were Blades. 其它, like Gort, end up as failed experiments, suffering numerous mutations that barely keep them alive.
Blade Eater technology was pioneered by the Indoline Praetorium as military weaponry. However, it has also be shown to have medical applications. Because this technology was unheard of before the end of the Aegis War, Mythra fails to identify the type of resonance between Blades who have been eaten and their Drivers. Blades which have been eaten cannot return to their Core Crystal upon incapacitation, and thus may die permanently.
Known Blade Eaters
Notes
- Despite being similar in concept to a Blade Eater due to having part of a Core Crystal in his body, Rex is never considered as one. Instead of obtaining unique abilities or a longer lifespan, both Rex and Pyra and Mythra became more vulnerable, sharing their injuries, with Pyra and Mythra themselves losing their immortality. Mythra explains that, when a Blade shares their Core Crystal with another, it splits in a uniform fashion, with the rule being that the center goes to the 其它, while the Blade remains with the outer part. As part of this split, the 分裂 core parts exchange information between each 其它, reflected in both parties sharing their injuries, regardless of who originally suffered it. This exchange does not seem to happen between a Blade who has had (part of) their core stolen and the thief.
- Although not always the case, becoming a Flesh or Blade Eater may grant the individual a second form such as for Jin and Nia.