I think the 2020 Mars Rover should be named Investigator because it's going to investigate Red Planet. When the 2020 Rover explores Mars, it will look into the planet to see if there is life or if there was life on Mars. Just like a real investigator would look for clues, the 2020 Mars Rover will look for signs of life and see if humans could one day explore Mars. That is why I think the best name for the 2020 Mars Rover is Investigator.