Sancho Panza is a fictional character from the classic novel Don Quixote, written by Miguel de Cervantes in the early 17th century. He serves as the loyal squire to the main character, Don Quixote, who is an idealistic knight. Sancho is known for his practical wisdom, earthy humor, and down-to-earth perspective, which often contrasts with Don Quixote's lofty ideals and fantasies. Throughout the story, Sancho accompanies Don Quixote on various adventures, providing comic relief and grounding the narrative. His character embodies themes of loyalty and realism, making him an essential part of the story's exploration of the relationship between dreams and reality.