Team Three was a squad comprised of B1-series battle droids, fighting for the Separatist Droid Army of the Confederacy of Independent Systems during the Clone Wars. They fought against the Galactic Republic in the year 19 BBY. This team was stationed on the planet Mokivj, where it was assigned to patrol both the droid factory and the cortosis mine located there.
While stationed on Mokivj, Serennian Duke Solha gave Team Three the mission of directing the workers inside the droid factory to unload a shipment of supplies. These supplies were arriving on the Separatist freighter named Larkrer, and the team was to oversee the unloading process. Unbeknownst to them, Jedi Knight Anakin Skywalker was secretly using that freighter to try and locate his wife, Republic Senator Padmé Amidala, who was also on the planet. He was accompanied by the Chiss Senior Captain Thrawn and the astromech droid R2-D2.
Team Three made an appearance in Timothy Zahn's 2018 novel, Thrawn: Alliances. This novel is the second book in the Star Wars: Thrawn trilogy.