Clyde Langer (Turn Left)
From Tardis Wiki, the free Doctor Who reference
Clyde Langer had his life changed for the worse on 25 June 2007, when Donna Noble turned right instead of left; this small change in affairs produced Donna's World.
Clyde was investigating the Royal Hope Hospital - along with Sarah Jane Smith and his friends, Luke Smith and Maria Jackson - when it was transported to the Moon. (TV: Turn Left) There, the hospital was invaded by Judoon. (TV: Turn Left, Smith and Jones) Clyde died, along with Sarah Jane and his friends, when the hospital ran out of air. (TV: Turn Left)