John Henson, son of the late Muppets creator Jim Henson, died Friday after suffering a sudden heart attack. He was 48. The Jim Henson Company confirmed his passing today on their official Facebook page. The youngest son of puppeteers Jim and Jane Henson, John Henson was a shareholder and board member of The Jim Henson Company and was a longtime puppeteer and craftsman in the family biz who performed in voice and body suit as the nine-foot tall ogre Sweetums for many years. His credits in the Sweetums character include Muppets pics Muppet Treasure Island, It’s a Very Merry Muppet Christmas Movie, and The Muppets’ Wizard of Oz among other films, specials, and shorts.