Don't worry: He won't be gone forever. — -- After many failed attempts to dispose of Bart, Sideshow Bob will finally get his revenge on his rival next season on "The Simpsons." "Simpsons ...

After 574 episodes and 26 seasons, Sideshow Bob will finally get his wish. In a long-running Simpsons gag the diabolical character (voiced by Kelsey Grammar) tries fruitlessly to kill Bart Simpson ...

Bart Simpson and Nancy Cartwright visit the Empire State Building to celebrate the 30th anniversary of “The Simpsons” on December 17, 2018 in New York City. Getty Images.