The 94-year-old was billed to meet fans at the New York City event this weekend (11-12Mar17), but he'll be a no-show.

In a message to attendees on Friday (10Mar17), organisers of the convention wrote: "Big Apple Comic Con has just been informed that due to health issues Stan Lee will NOT be appearing at the convention Saturday March 11th or Sunday March 12th.

"Stan keeps to an amazing schedule and it seems to have taken its toll. We are terribly sorry for any inconvenience but the show must go on. We are going to have a tremendous weekend loaded with great guests, exhibitors and events... Let's all wish Stan well and party like you know he wants us to!"

Lee, a mainstay in the Marvel universe for decades, created the characters Spider-Man, the Hulk, Doctor Strange, the Fantastic Four, Iron Man, Daredevil, Thor, and the X-Men, and he often appears in cameos in Marvel movies.