B1 battle droids are a type of combat robot used by the Trade Federation in the Star Wars universe. They are known for their humanoid shape and are typically equipped with blaster rifles. B1 droids are designed for mass production, making them inexpensive and easy to deploy in large numbers during battles. These droids are often portrayed as lacking advanced intelligence, which leads to humorous situations in the films. Despite their limitations, B1 battle droids play a significant role in the Clone Wars, serving as the primary infantry for the Separatist Alliance against the Galactic Republic.