Penguin Heart is a supporting character in the anime and manga series One Piece. He is a member of the Heart Pirates, serving under the captain Trafalgar D. Water Law. Recognizable by his distinctive hat and penguin-like appearance, Penguin is loyal, brave, and often seen alongside his close friend Shachi. He provides comic relief but also demonstrates competence in battle and navigation, making him a valued crew member throughout the crew’s adventurous journey in the New World.