John Caleb-Bradberton was the founder of the Nuka-Cola Corporation. He invented Nuka-Cola in 2044.
Appearances
John Caleb is only mentioned by Sierra Petrovita in Fallout 3.
In the Nuka-Cola Factory you can convice Milo, Shipping Foreman you are John Caleb-Bradberton. (Fallout 3)
Behind the scenes
His name is an amalgamation of the inventors of Coca-Cola (John Pemberton) and Pepsi-Cola (Caleb Bradham).