In 1979, he was heating a frozen burrito in a microwave with a busted door while repairing well-worn favorites from his music collection. The radiation that escaped mutated him into the hero he became: Mister Eight-track Tape Splicer.
Since then, he has walked the earth in a purple spandex one-piece, the yellow letters METS emblazoned on the chest, in search of those with broken tapes, using his superpowers only for good.