3B3 was a B1 battle droid produced by Baktoid Combat Automata that served with the Trade Federation Droid Army prior to and during the Invasion of Naboo. The name was a shortened version of the droid's full serial number.
Following the First Battle of Theed, 3B3 intercepted Jedi Master Qui-Gon Jinn, his Padawan Obi-Wan Kenobi and their navigator, Jar Jar Binks, as the trio emerged from a Tribubble bongo on the Solleu River in Theed. Jinn destroyed 3B3 and continued with his mission to rescue Queen Amidala.
- Star Wars: Episode I The Phantom Menace (Deleted scene) (First appearance)
- Episode I: Obi-Wan Kenobi (Appears in flashback(s))
- Dangers of the Core
- Star Wars Episode I The Phantom Menace: Illustrated Screenplay
- Star Wars: Episode I Insider's Guide
- The New Essential Guide to Droids
- The Complete Star Wars Encyclopedia, Vol. III ("3B3")