Willard Decker

Willard Decker was the son of famed Starfleet Commodore Matt Decker. After Will was relieved of command by Admiral James T. Kirk –somebody really should make a note of Kirk's never-ending quest to relieve all captains named "Decker"— the disgruntled Executive Officer committed suicide by merging with a blow-up doll. (Star Trek: Encounter at Farpoint)
Decker was regenerated as Willardiam RiDecker, remained a second stringer, and eventually merged with a blow-up doll. (TNG: "Star Trek: The Next Generation: The Motion Picture", Star Trek: More Khan, Less Character.)