On current Opt In build 0.97, I have created three customer races and each time the research assistant/Avatar is Human. I am not using any Terran items (ship design, research tree, etc.) I'm pretty confident it should go back to using a hovering robot and not be Terran each time.
Also, there is a grammatical typo when achieving Passionate Communication in the Thalan tech tree. "...they may begin seeing {the} same way as us..."