Hunter-Seeker Droids were droid starfighters used by the Trade Federation. Although they did not look like starfighters and looked more like droids, they were used in space for defense of Trade Federation Landing Ships.
They were armed with a Laser Cannon and their design was based after the Destroyer Droids. In their wheel form, they would be launched into space and would unfold whenever enemy vessels approached. They were deadly in groups, but in groups, they could be taken out with one blast from a laser cannon.