As ordered by the King, 25 of the fighter crafts had spread around on the outer surface. The fighter crafts of this model had a transparent cover above and in front of the pilot. It was designed that way because it would give enough space to the pilot to see from and fly the craft safely.
The berserkers really liked the craft and believed that it was the craft of the best quality. When the missiles were locked on other aircrafts, those missiles would follow those locked target no matter where they moved or how fast they moved. It was considerably fast, and it could make a roundtrip of the planet until the fuel ran out.
However, they didn't have any other fighter crafts to compare its functions and performance with. So they did not know what they were missing in those fighter crafts.