^oh it's definitely Closure's doing. She clearly likes giving the toasters quirky ass personality matrixes.
...note that this also indicates that they're either A) fundamentally just glorified chatbots rather than "artificial people" making all this rather squicky Cargo Shipping when you start thinking about it, or B) if they're true "strong" AIs then they exist in a condition of abject slavery where their very minds and personalities can be erased or rewritten at any time at the caprice of their owners...
Pick your poison.