The One Piece Trading Card Game has grown into a global phenomenon since its 2021 release, with the Korean market establishing itself as a significant collecting region. Memorial Collection represents a thoughtful retrospective of the franchise, celebrating iconic characters through alternative artwork interpretations. These Korean extra boosters showcase localized design sensibilities and remain important documents of the game's international expansion during its peak collecting era. Hannyabal, the ambitious jailer of Impel Down, appears here in an alternative art treatment that captures his theatrical personality and distinctive character design. Collectors appreciate alt-art cards for their fresh visual presentations and the way they honor supporting characters often overlooked in standard releases, making this version particularly appealing to fans seeking comprehensive character representation.