A mechanical man with human thoughts

So I just wanted to draw something artsy that has to do with a robot. After some thinking, I decided I wanted to make a story out of this. It would probably just be a comic series but whatever.So here is what I have so far. In the future, aliens start to attack the Earth. Many scientists are working with the government in a new organization, Nationalarmors corp, to stop them. One day one of the workers, Andrew, in the headquarters for Nationalarmors corp gets injured in an attack. His section was bombed by a group of rebel humans who want to join the alien forces. All of his colleagues are dead, fortunately, He is still alive, yet severely injured.His wife , Kadhiroli, who works as a scientist for Nationalarmors corp suggests trying the experiment that she had been working on on her husband. The experiment was to put Andrews brain in a robot body. This was going to be used as a weapon against the aliens. They had planned on taking the brains of the dead soldiers and putting them in to indestructible robots. The wife of the man who had been injured, but she also thought this was too extreme since he was only a father and an office worker, so she put his brain into a simpler model. Exactly three weeks after the surgery, the aliens invaded earth and killed all living creatures on it.The scientists had failed to realize how much more advanced the aliens were compared to the way they had perceived them. Andrew had managed to survive and had also suffered his brain damage. The memories he had of his family were faint and he didn't really even remember who he was. So that is all I really have so far, I also thought that he could only be able to only speak by recording words and phrases and play them when needed to. This will come in handy because I plan for more aliens to come along and find him.Thanks for reading and tell me your thoughts and suggestions in the comments.