Big the Cat is a large, laid-back purple cat appearing in the Sonic the Hedgehog series. Known for his gentle and carefree demeanor, Big is best friends with Froggy, his beloved frog companion, whom he often searches for throughout his adventures. He is a skilled fisherman and provides comic relief with his easygoing attitude. While not a main protagonist, Big the Cat plays a supportive role, helping Sonic and friends when needed, especially in times of crisis.