Baron Greenback is a fictional character from the British animated television series Danger Mouse. He serves as the primary antagonist and is known for his cunning and villainous schemes. Baron Greenback is depicted as a green, anthropomorphic toad who often tries to defeat Danger Mouse and take over the world. The character is characterized by his distinctive appearance, including a top hat and a monocle. He is often accompanied by his bumbling henchman, Count Duckula, and uses various gadgets and inventions in his plots. Despite his evil intentions, Baron Greenback is portrayed with a humorous flair, making him a memorable villain in the series.