Onion is a small, cute character from the Puyo Puyo series, known for his round onion-shaped body and simple, childlike appearance. He is one of the recurring non-human characters in the franchise and appears as part of the colorful cast surrounding the puzzle-game battles. Onion’s role is mainly as a minor mascot-like character rather than a major plot figure, contributing to the playful and whimsical tone of the series. He represents the charming, humorous side of the Puyo Puyo world.