The ES-55 is a small VTOL attack aircraft which those with a good eye for aircraft will notice is comparable to the British Aerospace Harrier in both size and shape, With the ES-55 being slightly bigger in size.

However, unlike the Harrier it can travel faster than the speed of sound, with a top speed of around Mach 1.5 at 30,000 ft. The ES-55 also lacks a gun(s) to keep costs down. However, to compensate, the ES-55 has two extra hardpoints where a gun pod(s) can be mounted. The ES-55 also has a combat radius of around 550 miles (at 15,000 ft) with the default mounted weapons, which include: 2 x rocket pods, 6x Infernos and 2x Guardians.