Madmartigan is a fictional character from the 1988 fantasy film Willow, directed by Ron Howard. He is portrayed by actor Val Kilmer and is known for his charming personality, skilled swordsmanship, and roguish demeanor. Madmartigan initially appears as a self-serving mercenary but evolves into a loyal ally to the protagonist, Willow Ufgood. In the story, Madmartigan helps Willow protect a special baby, Elora Danan, from the evil queen Bavmorda. His character adds humor and excitement to the film, showcasing themes of bravery and friendship as he ultimately fights for a noble cause alongside Willow and other companions.