In many mainstream comic universes, Ned may or may not appear. It really varies based on the storyline and the creative decisions of the writers and artists.
Ned's death occurs in the comics. It's a significant plot point that has an impact on the story's direction. The circumstances surrounding his death add depth and drama to the comic narrative.
Ned Leeds in the comics is a supporting character who has had various roles and interactions with the superhero. Sometimes he's just a regular guy caught up in Spidey's adventures, and other times he's had more significant plotlines of his own.