Hello.
Synthia has a pattern of speech that people recognise. She also comments on things that seem trivial or irrelevant to other people, as if it was the most important thing in the universe.
As best as I can, I also try and not have Synthia appear to show emotion.
Also
I'd say any AI in a human body ought to be played with a great deal of awareness of just how fragile and resource-consuming such a build would be. Avoid physical combat unless fully armored, be slower moving than most Sci-Fi cyborg/androids are, and be very suspicious of any direct-contact info-transfers which might introduce corrupt code, virus', trojans, worms, or other attacks. In short, given the anti-AI atmosphere in New Eden, any actual AI's are ultra-vulnerable because humanity has not put that much energy into upgrading them.
This could lead to an awesome characterization of a hyper-intelligent being which is utterly crippled by fear of its own fragility.
This is an interesting post, although it does not apply as much to Synthia as it does to other people.
Synthia, is complicated. Each "Synthia" is essentially a remote-operated roboticised human, built using Takmahl-derived technologies. Takmahl being one of the ancient, vanished, cultures that feature in the COSMOS constellations. Takmahl technologies included cybernetics and bio-engineering, including a device called a "biodroid controller".
The entity that is operating the Synthia-robots, is... more complicated.