John Henson, Son Of Muppets Inventor Jim Henson, Dies At 48 PEOPLE Posted: February 16, 2014 8:30 am“John Henson sometimes performed as Sweetums, a large, hairy Muppet who towered over other puppets and humans.” Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)