The Gundam G-Lucifer is the newest G-type mobile suit developed by the G-IT Laboratory that is still in the testing phase, thus two extra seats are added in the cockpit for checking and operating. Equipped with Photon Armor, high quality radar, and main thrusters that have high output and durability, this refined machine has high performance worthy of the name Lucifer. It is also said to have Minovsky Flight generator built into its feet, allowing it to fly independently under gravity.

With its streamlined body and a mono-eye as its main sensor, the G-Lucifer has a distinct appearance from other G-type mobile suits, such as the G-Self and G-Arcane. Like the G-Self, it is a “universal standard” mobile suit that can be easily operated. Similar to how the Gaeon is specialized to utilize the Big Arm, the G-Lucifer is designed specifically to utilize its Skirt Funnels. Such a design embodies the G-IT Laboratory's philosophy of using mobile suit as the base unit of special weapons. On the other hand, if it loses its funnels, its firepower will be drastically reduced. Besides the funnels, it is also armed with a pair of beam sabers and can use ordinary beam rifle.