ZZ Gundam makes the move to HGUC! To preserve the outstanding detail and proportions, transforming is accomplished via interchangeable parts. The Double Zeta Gundam can be transformed between Core Fighter, Core Top, Core Base, and G Fortress modes. As part of its arsenal, the ZZ Gundam features a Double Beam Rifle, two Hyper Beam Sabers, and Missile Pods. When displaying it in G Fortress Mode, part of the frame is used as a base. This piece also holds parts which are not used when in certain modes.