Beldam is a character from Paper Mario: The Thousand-Year Door for the Nintendo GameCube. She is a boss character and is the leader of the Shadow Sirens. During the events in the game, she is said to be one thousand years old. For years, she acted as the Shadow Queen's servant though this ended once the queen became trapped inside the Thousand-Year Door by the four heroes.
Being loyal to her queen, Beldam composed a plot to free her from the jail by creating rumors that a great treasure awaits inside, causing people around the world to want to go and find it.
In all, there are three Shadow Sirens, the other two including the silent one known as Marilyn, and the other one known as Vivian. She came to like the former, though grew a deep hatred for the latter, oftentimes blaming her for things that she, in fact, did not do.