Merriwether St. John Williams (born March 28, 1968) is an American television writer, former Nickelodeon executive and actress, who has worked on television shows such as Happy Tree Friends, SpongeBob SquarePants, My Little Pony: Friendship Is Magic, Camp Lazlo, and Adventure Time. After leaving the executive ranks at Nickelodeon, she wrote outlines for SpongeBob SquarePants and a couple episodes of The Angry Beavers. In 2003, she developed and became the show-runner and head writer of the short-lived Showtime animated sitcom Free For All. In 2005, she became the head of story for Camp Lazlo at Cartoon Network.