The Simpsons guest start R. Lee Ermey died today, April 15th, aged 74. He died today due to complication of pneumonia.

Statement from R. Lee Ermey's long time manager, Bill Rogin:

It is with deep sadness that I regret to inform you all that R. Lee Ermey ("The Gunny") passed away this morning from complications of pneumonia. He will be greatly missed by all of us.

Semper Fi, Gunny. Godspeed. pic.twitter.com/vf4O78JKmb

— R. Lee Ermey (@RLeeErmey) April 15, 2018

He voiced Leslie Hapablap in the season 7 episode “Sideshow Bob’s Last Gleaming” and the season 26 episode “Waiting for Duffman“.