Unidentified B1 battle droid 18

"Impressive!"

- The droid about Obi-Wan's skill.

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 warship in order to force the Galactic Republic ships to stop their attack.

Later, Jedi knight Anakin Skywalker and Jedi Master Obi-Wan Kenobi boarded the warship in an attempt to rescue the senator. After they learned that the Malevolence's hyperdrives were almost repaired, Obi-Wan Kenobi left to destroy them, but was ambushed by a battalion of droids, including this one, lead by General Grievous himself. The Jedi eventually managed to escape and this droid expressed his impression about the Jedi's skill, only to be hit by a furious Grievous moments later.