GN-R4 Gundam Oberon

Oberon was built to be the bombardment unit. It's armor is thicker to withstand the power of the GN Hyper bazookas. It is equipped with 2 hyper bazookas and 2 GN cannons mounted on the backpack. The GN cannons are on sub arms that allow them to fire in any direction. 

Assisted by a HARO unit, Oberon's back cannons can be controlled by the computer to fire on enemies that the pilot may not be able to see

The hyper bazookas can dock with the GN cannons for even more powerful particle beams

The hyper bazookas can also combine into the GN hyper mega bazooka, discharging an enormous beam that can destroy multiple enemy carrier ships

Aside from the thicker armor, Oberon also has 4 GN field generators on the legs and shoulders. These units produce a sphere of gn particles that protect Oberon as well as an ally suit. 

Oberon is definitely one of the more powerful gundams on the Andromeda team. There are also gn beam sabers stored in the knee area of the leg armor

Model number: GN-R4 

Name: Gundam Oberon 

Pilot: Sayla Aston 

Affiliation: Celestial Being