Question: is rex racer racer x?
Answer: Racer X is a heroic, mysterious, flamboyant, selfless, sympathetic and often brooding soldier of fortune. His true identity is Rex Racer (三船 研一, Mifune Ken'ichi), the eldest son of Mom and Pops Racer and the older brother of Speed and Spritle. His 'Racer X' moniker is actually a play on his own first name Rex.