ASP-19 battle droids were combat-capable labor droids employed in melee training.
Although ASP-series labor droids were simple-minded automata of general-purpose, the ASP-19 variant was capable of wielding melee weapons and was intended to function as a training droid against organic beings.
Darth Vader used several droids of this type, equipped with lightsabers to hone his lightsaber dueling skills. Vader's ability to handle this weapon was, in fact, much better than ASP's, so they were less than a match for the Sith as he ordered them to be sent to his training grounds in larger numbers. A few ASP-19 were also kept in Bast Castle's training chambers on Vjun.
Later, the Jedi Praxeum on Yavin 4 also used such droids for lightsaber combat practices. They wielded training lightsabers, and could be set at different levels of difficulty. Jaden Korr, when he was apprenticed under Kyle Katarn, was forced to fight one when Katarn's other apprentice, Rosh Penin, set it out in hopes of slowing Jaden down in a training course. Luckily, it was not operating at a high level, so Korr managed to defeat it. He later encountered several more such droids on a mission at Vader's castle on Vjun. These were more difficult to defeat, so they may have been set at Master level.
- Star Wars Missions 9: Revolt of the Battle Droids
- Star Wars Missions 10: Showdown in Mos Eisley (Modified)
- Star Wars Missions 11: Bounty Hunters vs. Battle Droids (Modified)
- Shadows of the Empire comic/novel (First appearance)
- (as "combat training droid")
- Star Wars: Shadows of the Empire Galoob minicomic
- Star Wars: Jedi Knight: Jedi Academy
- The Secrets of Star Wars: Shadows of the Empire
- Shadows of the Empire Sourcebook
- Star Wars: Shadows of the Empire trading cards (Card: ) (as Asp assassin droid)
- (Indirect mention only)
- Star Wars: The Art of the Brothers Hildebrandt
- The Official Star Wars Fact File 20 (LAB2, Labour Droids)
- The New Essential Guide to Droids
- The Complete Star Wars Encyclopedia
- Darth Vader: A 3-D Reconstruction Log