As photos, trailers and rumors have leaked about Star Wars Episode VII: The Force Awakens, a new star has emerged: BB-8, the small, chipper, spherical astromech droid.

Droids (or androids) are an integral part of the Star Wars universe. The first characters audiences met in the original 1977 film were C-3P0 and R2-D2. Their galaxy is populated with robots working a multitude of jobs: soldiers, bounty hunters, mechanics, doctors, teachers and even nannies.

Take a look at the interactive droid encyclopedia below to learn more about your favorite droids, and meet some new ones from across the galaxy. We couldn't list every droid because there are simply too many — from the films to TV to books and video games — so if you missed a droid you wanted to see, let us know in the comments.