Answer
The beloved Peanuts character renowned for their attachment to a blanket is Linus van Pelt. Linus, with his ever-present blanket, encapsulates comfort and security. Known for his profound philosophical thoughts despite his young age, Linus finds solace in his trusty blanket. Whether seeking reassurance or battling adversity, he derives strength from its warmth and familiarity, making him a relatable and treasured figure in the world of Peanuts.