how did the characters from nightmare before christmas died

As a Christmas elf, I can shed light on the unfortunate events that led to the demise of several characters from The Nightmare Before Christmas. The story's protagonist, Jack Skellington, was the first to meet his tragic end. As the Pumpkin King of Halloween Town, Jack's obsession with Christmas led him to kidnap Santa Claus and take over his role. However, Jack's attempts to bring joy to Halloween Town residents through his twisted version of Christmas were unsuccessful, ultimately leading to his downfall.