The YF-4 Lightning, also known as the VF-X-4, was the prototype of the VF-4 Lightning Advanced Veritech Fighter.

The YF-4 was in service at least by 2015. In that year Captain Rick Hunter took the YF-4 into battle after Wolf Squadron was ambushed by rebel Zentraedi. Despite a transformation malfunction that prevented the YF-4 from changing into guardian mode Hunter was easily able to destroy two MAC-II Monsters. Following the incident Doctor Emil Lang chastised Hunter for risking the valuable prototype. (Comic: "Robotech: From the Stars 0: Promises")

Designed in the final years of the First Robotech War, the YF-4 was meant to replace the older VF-1 Valkyrie. However, the fighter proved to be too costly and complex and did not enter mass production.

Secondary history

A YF-4 was used to deliver Madalyne Hyser to her Army of the Southern Cross base in Africa. (Robotech: The Misfits)

At the start of the Invid invasion, a YF-4 out of UN Luna Base Four escorted Bird Dog on its patrol, although the escorts were destroyed when the Invid arrived. ([[Introduction)


Secondary continuity


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