El Ojo del Fuego Eterno

From Inga no Kusari wiki

El Ojo del Fuego Eterno is Caliban's dormir.

Like Caliban's crezca as a hollow, El Ojo del Fuego Eterno manifests it self as an ‘burning eye,’ an eye that is made of the color of fire.

Poisoned claw: when Caliban ascended to an arrancar, he lost his second set of arms and the claws attached to them, with this ability, Caliban can grow a single Poisoned Claw to infect new ‘spies’ and ‘Drones’

Transformation cleansing: Both the Soul purification of shinigami and the soul corruption of Hollows effectively cleanse a Infected soul of El Ojo del Fuego Eterno.

Dormir Ability

Remote sensing: Anyone/anything infected with El Ojo del Fuego Eterno passes along all they hear and see to Caliban, People and creatures infected with El Ojo del Fuego Eterno form the massive majority of Caliban’s ‘spy network’

Limited transmission: El Ojo del Fuego Eterno can only be acquired in two ways; Being cut by Caliban’s poisoned claw or by Consuming a special pill produced by Caliban. Not even being injected with infected blood will spread it.

Symbiont: El Ojo del Fuego Eterno is a symbiote, It prevents anyone infected by it from contacting most sicknesses, I can even stop the spread of cancer, in return El Ojo del Fuego Eterno slowly feeds off of its host’s soul, providing the otherwise mouth less Caliban to consume souls. This leads to a slow corruption of the soul that eventually leads to the death of the host. However because of their short lifespan and transformation cleansing most humans don’t live long enough to experience any severe side effects.