Justin is a robot, which means it is a machine that can do things that we as people need help with. It can move, walk, and follow instructions. It's like a little helper that can do things for us. It can be programmed to do tasks like pick things up, move them from one place to another, or even do complex tasks like play a game with you. Justin can also learn new things, which means it can understand more instructions and become more helpful to humans.