For those who have not completed games in the Xenoblade Chronicles series, this page contains spoilers regarding the plot. Discretion is advised.
Flesh Eaters are a special kind of Blade that were fused with humanoid cells in an attempt to give them unique abilities. Flesh Eaters were mainly a product of the lost kingdom of Judicium. They are able to wield their own Blades, and have their own Core Crystals, as well. They are also 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, losing their immortality and gaining aging bodies.
Known Flesh Eaters
Although similar, Blade Eaters are a different type of entities. They are humans who have been fused with part of a Blade's Core Crystal.
Blade Eaters have a significantly longer lifespan than a regular human. Some Blade Eaters, like Mikhail are able to use their own weapons as if they were Blades, while others, like Gort, ended up as failed experiments, suffering numerous mutations that barely kept them alive.
Blade Eater technology was pioneered by the Indoline Praetorium as military weaponry. However, it has also be shown to have medical applications.
Known Blade Eaters
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, and his condition is stated as "sharing his life with Pyra and Mythra", and