Diego Brando is a genius British jockey, hailed as one of the best contenders to win the Steel Ball Run race. However, he eventually shifts his attention to gathering the Saint's Corpse for President Funny Valentine instead, after becoming aware of the race's true purpose. Diego becomes a long-standing rival of Gyro and Johnny throughout the Steel Ball Run, and although he teams up with many different individuals throughout the story, in the end, Diego is only ever truly loyal to himself.