Bred by Jack Casement of Westplains, Colorado, JOKER B. was the 1962 National Champion Get-of-Sire, and in the top three for Get-of-Sire in 1957, 1963, and 1966. Foaled in 1941, JOKER B. is by RED DOG (AQHA) and out of BLUE VITRIOL. 

He was an influential sire, and during the 1960s this horse was greatly responsible for the promotion of the Appaloosa breed by way of his extensive campaigning and numerous public appearances. JOKER B. sired 196 registered foals and passed away in 1966.