Bruno Mars' real name is Peter Gene Hernandez. His father is of half Puerto Rican and half Jewish (from Hungary and Ukraine) descent, and is originally from Brooklyn, New York. Mars' mother immigrated to Hawaii from the Philippines as a child, and was of Filipino, and some Spanish, descent.
At the age of two, he was nicknamed "Bruno" by his father, because of his resemblance to legendary professional wrestler Bruno Sammartino.