Pompompurin is a golden retriever dog character from Sanrio, featured in the anime series 'Sanrio Danshi.' In the series, Pompompurin serves as the favorite Sanrio character of Yu Mizuno, one of the main protagonists. Pompompurin is known for his laid-back, friendly personality and trademark brown beret. He represents comfort and friendship, often inspiring the characters to embrace their interests without shame. While not a human character, Pompompurin plays a symbolic and motivational role in the story.