Here’s Your Favorite Child Star Who are All Grown up, Then&Now

57. Malcolm David Kelley

Young Walt may be too old to stay in Lost - strange things may have happened on the island, but apparently not sudden growth - but Kelley is still young enough to have a role in TeenNick's Gigantic in 2010 . After the show, Kelly reunited with his co-stars to form Columbia Records-backed singing duo MTKO. From the way Walt's father Michael howls, maybe they should consider him a recruit.