The thermal annihilator bomb represented an explosive weapon utilized by the Zygerrians on the planet Kiros, capable of being triggered from a distance. Because the Republic remained unaware that all of the Togruta inhabitants of Kiros had been abducted, Darts D'Nar employed these bombs to orchestrate a hostage scenario. Obi-Wan Kenobi confronted D'Nar in battle, diverting his attention as Anakin Skywalker and Ahsoka Tano proceeded to deactivate the bombs using their respective lightsabers.