>>327353857
I see I see, so like a stylized sex doll, with replaceable silicone/TPE parts. Some parts would need to be made with cheaper materials so that replacements would be cost effective, so perhaps mostly aluminum and a little bit of titanium alloy or something. Treated with a coating to prevent damage. I'm not a metal worker so I'm not sure. 
As for the AI, if you must have a "free" configuration, then you would likely have to have it undergo many iterations until you found a pattern that would find you beneficial to it's existence. 
>>327354234
Perhaps not, but a regular rechargeable battery would be sucked away pretty quickly, it's basically a walking computer. I believe Boston Dynamics had a minimized on board power source with one of their newer creations, but I don't know what kind of battery it is.