D.A.N-1

D.A.N-1 is a robot, unsurprisingly. But he is different, his AI was built from actual brain scans. That means that he is sentient. He cannot speak, only having a special buzzer, but he gets around this by using a notebook to write down what he wants to say, and his buzzer to make different frequency buzzing and hums. He is very sad all the time since he doesn't know what his purpose is, but he is also very logic-based due to his artificial nature, though he can feel love, he doesn't know how or what it feels like. He occasionally buzzes tunes to entertain himself.