Preston Whitmore is a fictional character from the animated film series Atlantis: The Lost Empire. He serves as the leader of the expedition to find the lost city of Atlantis and is portrayed as a wealthy and adventurous man. His character is known for his determination and resourcefulness in seeking out ancient knowledge and treasures. In the film, Preston Whitmore is depicted as a mentor to the main character, Milo Thatch, guiding him on the journey to uncover the secrets of Atlantis. His background as a businessman and explorer adds depth to his role, making him a key figure in the quest for discovery and adventure.