Legilis first piloted by Fezarl Ezelcant, the supreme leader of Vagan. The mobile suit was later piloted by Zeheart Galette after his Ghirarga was heavily damaged in the Luna Base Battle.
The Beam Buster was a powerful weapon that possesses the power to destroy a few mobile suits in one shot. It is presumably more powerful than Ghirarga's Beam Buster.
I think it is very easy for the beam buster to come with white parts instead of need to paint it^^; since there is other white parts as well.
The Legilis's shield is a simple defensive armament that protects the Legilis from enemy attacks. Overall the shield boosts the Legilis's decent defensive capabilities as the unit already features the Electromagnetic Armor, a standard Vagan defense system. Lastly, the Legilis's shield also serves as the unit's Particle Bit Generator.
It is notable that the Legilis is one of the only Vagan mobile suits to use a shield, which is the standard defensive armament of Federation mobile suits.
The Legilis Cannon is a long-range beam rifle that can be held over or under the shoulder when in use, this armament possesses the power to destroy most mobile suits in one shot. Serves as the Legilis's tail when not in use.
The beam saber is the basic close range combat weapon of many mobile suits, both Federation and Vagan alike. However unlike the Federation beam saber, the beam saber used by Vagan mobile suits are generally mounted on the unit's hands, as opposed to being hand held like the Federation beam sabers. The beam saber of the Vagan mobile suits are generated from the unit's beam vulcans, allowing Vagan mobile suits to switch quickly from ranged combat to close range combat. The beam saber can easily cut through most mobile suits.
The Gundam Legilis uses the same Core Block System from the AGE-3O Gundam AGE-3 Orbital, dubbed the "Legilis Core." This feature was reversed-engineered from the captured Gundam AGE-3 Orbital. The core unit, where the cockpit is located, can be detached from Gundam Legilis. This feature is similar to how the Core Fighter is used on the AGE-3 Gundam AGE-3 Normal. When separated, the Legilis Core can transform into a dragon-shaped unit, which consists of the Legilis's head, inner torso, its back (where its wings will be expanded) and its tail beam rifle.
Overall, Legilis was a mixed-blood product with the spooky appearance which was unique than other Gundam designed by the earth federation force. The eye sensor of the Legilis is also the most unique out of all Vagan suits as it can change between a standard slit-shaped type or a Gundam-type twin eye. Another gimmick was the "Legilis Core" which can detached from the body make this kit another worth to buy.
Information from Gundam Wiki, Thank you for reading^^