Mecha built and piloted by Kuga Hiroto in Gundam Build Divers Re:Rise. The Core Gundam is a gunpla that uses a modular system to equip various specialized armor sets. It is used throughout the first season of the show, and is upgraded into the Core Gundam II in the second season.
There are alternate colorations of this mobile suit based on the G-3 Gundam and RX-78-2 Real Type. Alus and Rize created their own replicas of the unit with the Alus Core Gundam and Core Gundam (Rize) respectively.