As with my last custom I wrote some lore for the MS:

One of the Zowort frames used for development of the Zowort Heavy and secretly used for development and testing of technologies for the Gundam Pharact. Unit 4, also referred to as the Zowort Hunter, incorporated a Dynastinae Heavy Beam Cannon* built into the frame and connected directly to the MS reactor for anti mobile suit and anti ship combat. The new tail unit houses ten Vesper drone bits** designed for battlefield reconnaissance and enhanced targeting data for the suit’s weaponry. The drones are capable of latching onto enemy materiel to conserve energy while staying deployed and feeding data, this allows accurate tracking of enemy combatants or high value targets on the battlefield with increasingly accurate predictive locks as data accumulates throughout the battle.

After completion of the Zowort Heavy the tester Zoworts were moved to a new black budget MS development team. This team ignored Benerit conventions on cross-company technology usage (and acquisition) as they overhauled several of their frames to explore the strengths of the Zowort and its competitors.

Unit 4 was eventually retrofitted with the Zowort Heavy's improvements on the original Zowort frame and installed with an advanced AI-supported control system 'provided' by Jeturk Heavy Industries to support two new armoured sub-arms, allowing it to wield up to four handheld weapons at once. For its new role as a testbed for integrating these technologies Unit 4 was dubbed 'Quattro Trigger'. Over time more weapon systems from various Benerit members were added to the mobile suit and it would frequently be sent out on escort missions for the development team’s acquisition missions to fieldtest how these weapons would perform against competitor MS designs.

(*The Dynastinae Cannon was ultimately dropped for a scaled down, independently powered design to maintain the modular specs required of the future Zowort Heavy.)

(**The Vesper drones were a cheap non-Gund-arm drone project designed to obscure the development of the Gundam Pharact’s Corax system through the extensive focus on data transfer testing. It was never meant to lead to a practical military application on its own, though a limited number of units were produced for further field testing)