El Supremo

El Supremo is a fictional character in C.S. Forester's novels about Horatio Hornblower, appearing in The Happy Return. He is an insane and ambitious leader of a rebellion in a rebellion against the Spanish in the Pacific. He is aided and given a captured ship by Hornblower, until Hornblower discovers that the Spanish have switched sides. He is captured by the Spanish and eventually hanged.

He for example demanded a 23-gun salute, as a self-proclaimed superior being.

Some characters in W. E. B. Griffin's The Corps series referred to General Douglas MacArthur as "El Supremo." The main character to do this, Fleming Pickering, is a shipping magnate turned US Marine general from San Francisco. As a seaman himself, he could have been familiar with Forester's works.