Griffin, aka "Ditto," is the youngest McElroy brother. The nickname of "Ditto" was given to him after the Hi and Lois baby. Griffin is one of the three titular brothers of My Brother, My Brother and Me, along with his older brothers Travis and Justin. Their father is Clint.
Griffin is currently the Senior Editorial Producer of Video at Polygon, a video game website that he helped found in 2012. He is married to Rachel McElroy.