Irone Singleton: Irone Singleton. Actor: The Blind Side. IronE Singleton is best known to audiences as the menacing kingpin Alton in the Academy® Oscar Award-nominated film The Blind Side; the biggest box office grossing sports movie of all time. He is also known as the compassionate tough guy, T-Dog, in the Emmy, AFI & WGA Award winning, Golden Globe nominated TV show The Walking Dead; one of basic cable's highest rated shows...