Greg Patterson serves as a fellow soldier and friend to protagonist Johnny Rico in the Mobile Infantry. He endures military training alongside Rico and other recruits, sharing the demanding hardships of boot camp. His character takes center stage in the fourth OVA episode, titled "Greg," spotlighting his role within a dedicated narrative segment. As a member of Rico's core group of comrades, Patterson exemplifies the unit's camaraderie and collective struggles. He perishes during combat against alien forces in a battle sequence, an event that sparks Rico's personal growth. This loss directly shapes Rico's journey, amplifying the narrative's themes of sacrifice and warfare's psychological weight. Patterson's fate underscores the inherent dangers soldiers confront in the conflict.