The Prototype Hybrid Fighters were a small batch of fighter sized prototypes, built in mid-2259. They were secretly developed by the Minbari Religious Caste under the supervision of Ambassador Ulkesh and were used to test the hybrid Vorlon technology that was being developed for the new White Star class warships. The hybrid fighters were single-pilot ships, similar to Earthforce's Starfuries but much more powerful and maneuverable, able to match the capabilities of even a Shadow Fighter.