Walpurgisnacht is a formidable witch in the anime series Mahou Shoujo Madoka Magica. Known for her immense power and chaos, she is the ultimate adversary faced by the magical girls. The witch appears during the series' climax, bringing destruction and despair. Her presence symbolizes the overwhelming challenge and despair that magical girls must confront. Walpurgisnacht's role is crucial in highlighting the series' themes of sacrifice, fate, and the harsh realities of the magical girl world. Her enigmatic and destructive nature leaves a lasting impact on the storyline.