Linus Van Pelt, a central character in Charles Schulz's "Peanuts" comic strip, is inseparable from his security blanket. Introduced in 1954, Linus's blanket became a symbol of childhood innocence and comfort. Schulz used the blanket to explore themes of dependency and growth, often humorously depicting Linus's struggles whenever he tries to give it up. The concept of a "security blanket" entered popular culture largely due to Linus, becoming a term for anything that provides psychological comfort. Linus's philosophical insights and unwavering faith in the Great Pumpkin add depth to his character in the beloved strip.