He was also known for having a mixed-race crew, which included “English, Frenchmen, Spaniards, Mulattoes, and Negroes.” The Cuban-born Diabolito became known as a particularly dangerous pirate operating from his home island during the early 19th century.
He among others including Charles Gibbs, and Roberto Cofresí were identified as key figures in piracy when President James Monroe authorized the formation of an anti-piracy squadron to combat attacks on American shipping and naval forces occurring off the Florida coast.
As the years passed, however, Cuban ship owners and other businessmen petitioned for authorities to cooperate with the United States.
Spanish officials were unable to continue turning a blind eye to piracy, which often amounted to attacks on lone merchant vessels and fishing boats, and agreed to assist in hunting down Diabolito and others.
The men began abandoning their ship, the 4-gun schooner Catalina, and the American vessels were "soon in the midst of the swimmers, and, laying about right and left, exterminated dozens of them".