Born Leonard Bartley in the parish of Clarendon, Jamaica Merciless's career began in the early ’90s with his first song “Len Out Mi Mercy” followed by his billboard-topping album titled Mr.Merciless, Numerous hit singles then followed such as Mama Cooking, Gal Gizada, Ole Gallis, Mama Cooking, God Alone and Mavis which garnered international success.