The DD-13 medical assistant droid, also known as the DD-13 tripedal medical droid or simply the DD-13 medical droid, was a model of medical droid designed to install cybernetic implants. Its tri-legged design granted it stability. A DD-13 worked at the Grand Republic Medical Facility, where it assisted in fitting the grievously injured Darth Vader with his life support armor.
The script for "Blue Shadow Virus," the seventeenth episode in the first season of the Star Wars: The Clone Wars animated television series, which first aired on February 13, 2009, originally called for TR-350 to be a tripedal medical droid, rather than a T-series tactical droid. This is why C-3PO told the tactical droid "We all want to hear your tale of medical heroics." in the final episode. The DD-13 eventually made its series debut in "Orders," the fourth episode of The Clone Wars' sixth season, which originally aired in Germany on February 15, 2014.
