Personal assistant

If I had to choose a personal assistant from this specific list, I would choose Leonardo Da Vinci. I would choose him because not only is he an incredible inventor, but he is also an artist. The task I would have him do is build me a house. I would buy a piece of property, and I would have him draw the blueprints the first day. Then I would hire builders to use those blueprints to build the house. I would use the rest of the time I had with Da Vinci for him to paint my house. Since he is an artist, he could design all the walls. After he is done painting, if he finishes with extra time, I would have him help me furnish my house. In the end, I would have the coolest house ever. It would have secret rooms, exits, and entrances. Since Da Vinci is an inventor, he would be able to find a way to make these things possible.