The final unit of the GNHW series, the Seravee Gundam GNHW/B, joins the HG lineup. It features four GN Particle Storage Tanks on the shoulders and legs, two GN Cannons on the waist, and two GN Verniers mounted above the rear GN Cannons. The storage tanks include sliding side panels to recreate particle-release mode, while the waist-mounted GN Cannons can deploy their barrels to reproduce Burst Mode. A GN Beam Machine Gun for the separately sold HG Seraphim Gundam is also included, and the GN Verniers and GN Cannons can be equipped on Seraphim as well.

• Four GN Particle Storage Tanks with sliding deployment for particle-release mode.
• Waist-mounted GN Cannons with deployable barrels for Burst Mode.
• Includes GN Beam Machine Gun for HG Seraphim Gundam (sold separately).
• GN Verniers and GN Cannons are compatible with Seraphim Gundam.