Mr. Beauregard is the father of Silena Beauregard and one of Aphrodite's lovers. He owns a chocolate store in the Village, which was how he attracted the goddess' attention.

Percy Jackson and the Olympians

The Last Olympian

Hoping to cheer his daughter up after the death of her boyfriend, Mr. Beauregard sends Silena a box of bonbons from his chocolate store. She offers one to Percy Jackson during cabin inspection, but upon questioning, Silena claims they taste like "cardboard".