Doug was the Grim Reaper.
History[]
When Bart Simpson was on the list to die, Doug came to kill him. When Homer, Marge and Lisa heard, they tried to save Bart. He chased the family up the stairs, and ran door to door, coming out of a separate door each time, this scene parodies a British comedy, Santa's Little Helper got Doug's leg, and ran with it, Doug got in back moments later. Back downstairs, Doug catches Bart, and when he is about to kill Bart, the worried Homer, without thinking kills Doug with a bowling ball, making the world without death. After, Homer puts on Doug's robes, Homer does not know this would make him the Grim Reaper, because of this Homer had to take Doug's place for killing people, although Homer abuses it.
When Homer had to kill Jasper, he asked where Doug was, when Homer told him he was dead, before being killed, Jasper's last words were "I liked Doug".