Pinpi exhibits a calm and gentle nature, contrasting directly with Penpe's responsible personality. This dynamic defines their core relationship during shared appearances.

Available sources provide no details on Pinpi's breed, physical appearance, personal history, background, origins, or development. The character's role extends no further than these core traits.

Official media contains no exploration of Pinpi's individual story arcs, growth, expanded lore, relationships, or experiences beyond the established dynamic with Penpe. Pinpi appears exclusively alongside Penpe.

Season two maintains this approach without introducing additional character depth or history. No spin-offs, movies, or alternative media feature Pinpi independently. The character remains defined solely by the original calm and gentle depiction.