Pastis serves as one of ACCA's five chief officers, governing public services across the kingdom's thirteen districts. He hails from Suitsu District, a region preserved in 19th-century aesthetics with limited technology, reflecting its historical heritage. Born into nobility, his lineage aligns with Suitsu's aristocratic traditions. His appearance features long curly blond hair and a thin mustache, consistent with aristocratic norms. As a chief officer, Pastis holds significant decision-making power within ACCA's highest leadership, engaging in critical discussions on kingdom-wide matters like political stability and coup d'état threats. The narrative positions him within ACCA leadership during internal conflicts, including monarchy succession plans and efforts to maintain ACCA's authority. His home district of Suitsu later becomes a focal point when ACCA uncovers a localized rebellion, though his direct involvement in resolving it remains undocumented. Thematically, his name "Pastis" references an anise-flavored liqueur, connecting to Suitsu's cultural identity and association with sweets. Canonical information does not expand on his background beyond noble status, specific actions during the Suitsu rebellion, or character development across the original series, OVA "Regards," or spin-off media. His role remains defined by his duties and presence within ACCA's leadership structure.