Unidentified B1 battle droid 13 (Malevolence)

"What was that?" "What?" "Didn't you hear it? It sounded like a ship docking at one of the emergency air locks." "Your circuits are loose. No one's crazy enough to do that."

- This droid speaking to a fellow battle droid.

A B1 battle droid was stationed on the Separatist Subjugator-class heavy cruiser, the Malevolence, and served under command of General Grievous.

History
Around 21 BBY, after the Malevolence suffered a defeat at the Battle of the Kaliida Nebula, the Separatist forces captured Naboo senator Padmé Amidala and brought her aboard the ship in order to force the Galactic Republic ships to stop their attack. The senator eventually managed to escape and this droid along with a fellow battle droid were sent to look for her.

Meanwhile, Jedi knight Anakin Skywalker and Jedi Master Obi-Wan Kenobi devised a plan to board the Separatist warship by using their G9 Rigger freighter, the Twilight, to latch onto one of the exterior air locks. This battle droid and the other one felt the two Jedi board the ship, but dismissed the idea that someone could have docked at the emergency air locks. Shortly after, the two Jedi exited the ship and confronted the droids, destroying them.