Well, here's a description. I'll try to do a nice piccy, but I want to finish the thing first.

The Gencore Fleet Systems VF-21 Harpy is possibly one of the pivotal products in the company's short history. Originally developed as a potential replacement for the ageing 'Shrike' fighter by Novaldex. The Shrike had served the Venusian Navy for some twenty years, and was now obsolete in light of new technologies. Appearance-wise the Harpy looked very simple, but it was the beginning of the 'things aren't always what they seem' tradition of GFS.
At fleet trials the Harpy out-performed Novaldex's own entrant, the Raven, by being so utterly and resoundingly better than anything that it was difficult to comprehend. The Harpy is very fast, extremely agile, and the Venus' new Beam Laser armament, is very dangerous. The Harpy was eventually retired after fifteen years by Gencore's newer fighter, the VF-22 'Phoenix.'