Matthew Harcourt appears as a supporting character in the ONA series "AMAIM: Warrior at the Borderline UltraSteel Ogre-Gear". He pilots an AMAIM unit identified as a Bunyip Ginga model. The character engages in combat scenarios where his mecha deploys a Gatling-style weapon system, demonstrating tactical deployment of high-volume firepower in battle. His established attributes within the documented material center on this military role and mecha specialization.