Ford Prefect is a fictional character from Douglas Adams' science fiction series, "The Hitchhiker's Guide to the Galaxy." He is an alien researcher for the titular guidebook and is known for his quirky personality and deep knowledge of the universe. Ford is originally from the planet Betelgeuse and has a unique ability to blend in with humans, often wearing casual clothing. In the story, Ford befriends the protagonist, Arthur Dent, and helps him navigate the chaos of intergalactic travel after Earth is destroyed. His character serves as a humorous and insightful guide, providing commentary on human behavior and the absurdities of life in the cosmos.