The Protagonist is unique as the 'Wild Card,' capable of wielding multiple Personas. This makes him the most versatile member of your team. His primary role is to cover elemental weaknesses, provide support, and deal heavy damage. Focus on fusing Personas that cover a wide range of elemental attacks (Agi, Bufu, Zio, Garu) and healing/support spells (Dia, Media, Tarukaja, Rakukaja). For physical builds, look for Personas with powerful physical skills like Vorpal Blade or God's Hand. Prioritize Personas with good resistances to common damage types. Equip him with the best available weapon and armor, as his survivability is paramount. Maxing out Social Links is essential for unlocking powerful ultimate Personas for fusion.
