> Some adult Illithids have even been known to hum a tune that its host knew in life. Usually, when a mind flayer inherits a trait like this, it keeps it a closely guarded secret, because, were its peers to learn of it, the Illithid in question would most likely be killed.
> This is due to an Illithid legend of a being called the "Adversary". The legend holds that, eventually, an Illithid larva that undergoes ceremorphosis will take on the host's personality and memory in its entirety. This Adversary would, mind and soul, still be the host, but with all the inherent abilities of an Illithid.