Pinochle emerges as a primary antagonist within the Orpheus Order during the second season, confronting protagonists through high-stakes puzzle battles. A pivotal team-based clash against Kaito Daimon ends in a tie after Kaito strategically recovers from an early setback. His unwavering loyalty to Freecell drives him to employ underhanded tactics for victory, motivated by a deep-seated desire to become Freecell's friend—previously prompting him to spread damaging rumors about Kaito to isolate Freecell from rivalries.

After his Orpheus armband shatters, Pinochle undergoes significant development, transitioning from antagonist to ally. He aligns with Kaito’s group and assumes a supportive role by the third season, frequently assisting Freecell and attending school alongside him. Their relationship evolves into a close friendship, culminating in cohabitation. During critical confrontations against threats like Klondike and the Orpheus ring activation, Pinochle collaborates with former adversaries including Doubt and POG members to avert global catastrophe, demonstrating his integration into the protagonist circle.

Physically, he sports green hair in a bob cut, green eyes, and glasses, typically dressed in a white sweater with a blue and red pattern alongside black jeans. His legacy includes being among the few to defeat Kaito in a puzzle battle, underscoring his formidable puzzle-solving prowess.