Flintheart Glomgold is Scrooge's archenemy and the second richest duck in the world. Unlike Scrooge, he did not make his money honestly, instead cheating and even stealing to become rich. He has his own Money Bin in Africa, which is where they first met, and later moved to Duckburg to spy on Scrooge more effectively.
Biography
Eary life
Glomgold when he was a teenager
Scrooge and Flintheart first met in Africa when they were teens, though Scrooge did not know Flintheart's name. In Flintheart, Scrooge found what seemed at first like an equal, but was really a distorted doppelgänger that shared his will to win money to make his family proud, but not his work ethics and his will to "make his money square"; and even though Scrooge had saved Flintheart's life, the boer didn't repay him well, stealing everything from him and leaving him alone in a savana he did not know yet.
Flintheart in DuckTales
In DuckTales
In DuckTales, Flintheart is Scottish, like Scrooge, and lives on the other side of Duckburg, rather than South Africa. He also has a larger beard.