Sir X. Checker is a male anthropomorphic dog.
The elderly and sensible Sir X. Checker is a member of the Mintavian aristocracy and the country's royal treasurer. In 1982, he traveled to Duckburg to enlist the help of Scrooge McDuck and his gold-sensitive sense of smell to solve a particularly tricky counterfeiting problem.
Behind the scenes
The King only ever appeared in 1982 in The Counterfeit Caper.