Oscar lives in the Unova mountains with his granddaughter Anna, retired from his past role as a rescuer alongside his loyal Stoutland. Once dedicated to saving those lost in the treacherous terrain, his seasoned instincts surface when he questions Virgil’s competence after a helicopter maintenance failure forces an emergency landing. Yet when Mewtwo’s disappearance demands collaboration, Oscar’s skepticism gives way to respect as he and Virgil join forces, proving his ability to prioritize action over initial judgments.

During a hike with Anna, a collapsing cliff triggers a perilous fall. Stoutland lunges to cushion her descent, and Oscar leaps to aid them both, only for all three to be caught midair by Mewtwo’s psychic power. Grateful for the rescue, Oscar later seeks out Mewtwo to offer a Revival Herb, driven by a steadfast sense of reciprocity.

His pragmatic expertise as a retired rescuer shapes his cautious but cooperative approach, blending tactical insight with empathy. He strategizes search efforts, allies with Virgil’s team to oppose the antagonist Dirk, and becomes a pivotal figure in uniting humans and Pokémon during the crisis. His actions remain rooted in lived experience, reflecting a grandfather’s protective devotion and a rescuer’s unwavering resolve to safeguard others.