Eh, well, in canon the Warlock appeared just as she was showing Miyafuji images of the research being done, presumably sent by the missing core itself, and no solid explanations were given for anything. That's what leaves the question open for this interpretation, really... and you're right, especially for a TV series animation budget, they really did do a great job of having Chi communicate with body language, in what little screen time she gets.
Important link considering the adoption of the movie's assertion that the Neuroi were the gods and monsters of myth:
http://en.wikipedia.org/wiki/Neuri
This is who they were named after IRL, apparently. Whether there's any real connection is up to you to decide in your world building.
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
Important link considering the adoption of the movie's assertion that the Neuroi were the gods and monsters of myth:
http://en.wikipedia.org/wiki/Neuri
This is who they were named after IRL, apparently. Whether there's any real connection is up to you to decide in your world building.
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows