I've always been a fan of parasites.
My character, Jason, has a parasitic infestation of worms in his brain... but that's irrelevant to this topic, now, isn't it?
Parasites are a common occurrence, more so than man would like to admit.
Thus, bearing witness to an open specie such as this makes Vespian smile. Perhaps it will bring users to be more comfortable role-playing the monsters inside, albeit the Ikao are far from your average worm, tick, or flea.