There’s a lot of anxiety about robots lately, whether it’s from the threat they may pose to labor, or their potential to develop consciousness and decide to eradicate their fleshy creators. So far, however, the robots of the modern world are a bit underwhelming. A Roomba may be useful, but it doesn’t have much in the way of personality. If there’s one thing years of movies, TV shows, and video games have taught us, it’s that robots can be many things, and not all of them bad. Robots can be fun companions, or stoic guardians, or giant suits of armor for people to do battle in. Science fiction is rife with great robot designs; here are some of our favorites.