The Tank Form is the final available transformation in Banjo-Kazooie Grunty’s Revenge, located within Freezing Furnace after defeating Klungo in his last encounter within Grunty Industries and provide Mumbo with the resulting Mumbo Token for his services. Once transformed, Banjo takes on the appearance of a greenish-grey armored tank while retaining his characteristic blue backpack and yellow pants, with metal treads replacing his normal legs. The transformation features a missile attack executed by pressing the B button, which fires projectile ammunition capable of destroying enemies and breaking through specialized barriers throughout the world. These missiles prove particularly effective against heavily armored opponents and can eliminate most enemies in a single hit, though the projectiles travel at a slow speed compared to other ranged attacks available in the game. The missile system provides unlimited ammunition, allowing players to engage multiple targets without concern for depleting resources during extended combat encounters. The primary function of the Tank Form involves breaking through tank doors, which are metal barriers specifically designed to resist normal attacks and can only be destroyed through the tank’s missile system. These doors appear in both Grunty Industries within Freezing Furnace and Bad Magic Bayou, where they block access to sections containing puzzle rooms, collectible items, and progression-critical pathways. The doors in Grunty Industries lead to various sections including storage areas and the pathway to Klungo’s boss encounter, while the tank door in Bad Magic Bayou provides access to additional challenge rooms featuring puzzles. The transformation grants immunity to various environmental hazards that would normally damage Banjo and Kazooie, including toxic chemicals, poisonous surfaces, and other harmful substances due to its metal construction and enclosed design. However, it exhibits a significant movement limitation in its inability to jump, restricting vertical navigation and requiring players to find alternative routes to reach elevated platforms or cross gaps that would be traversed through normal jumping. This limitation necessitates careful route planning when navigating multi-level environments, as players must seek out ramps, slopes, or other ground-level pathways to progress through areas.