Executioner droid

The executioner droid represented an exceptionally uncommon variant of battle droid. It is documented that only three of these exceptionally lethal droids were active within the galaxy throughout the entire span of the Clone Wars. A specific executioner droid, property of the collector known as Kenna, engaged in combat with Jedi Master Mace Windu onboard Kenna's starship when that Jedi undertook a mission that led him to an abandoned planetoid.