Terror-Droids

The TR-4 Series Droids, dubbed Terror Droids, are a prototype Droid series built for Infiltration, Sabotage, Disarmament, Assassination, and (as the name suggests) terror-based psychological warfare. Developed on Taris by Lord Sanguis, the Terror-Model Droids were designed to specifically combat not only the hard-pressing Republic line, but also drive away settlers and colonists on the planet who the Republic either could protect or couldn't but still armed to defend themselves, thus clearing the way for Imperial expansion.

Creation
The Terror Droids were said to have come to Lord Sanguis as an epiphany during one of his meditations while he was considering how best to crack through the Republic line while also driving away pesky settlers without expending men and, quite possibly, lending weapons and armaments of Imperial-make to the unworthy.

The idea was of a Series of Droids that could be built and designed, specifically, to instill fear into the hearts of the enemy and bring about a quicker victory for the Empire, allowing it to not waste resources.

Lord Sanguis, after pondering the idea and running it by his Imperial colleagues and underlings at Outpost Varatas, Sanguis continuously held meetings with them in order to design these Droids through advanced Holo-tech brought in from Dromund Kaas on request of Droid Development Directory Marls Kessen.

Development and Testing
The design of the Droid took roughly four weeks to finalize. Development began two weeks after that due to pressing concerns distracting from the project such as bad weather, Nexu/Rakghoul attacks, and the continued effort against the Republic and settler guerrilla attacks.

The first model of Terror Droids, the TR-1 "Drider", was a small, plate-sized Spider-Droid with four blade-tipped, spider-like legs, a single red eye, and concealed syringe-like "stinger" hidden in a spring-like compartment on the bottom of it.