According to TMZ, Lee died Monday morning after being rushed to Cedars-Sinai Medical Center in Los Angeles. His death comes a little more than a year after his wife Joan?s passing. Earlier this year, Lee was rushed to a hospital after experiencing shortness of breath and an irregular heartbeat. Lee is known for co-creating characters like Black Panther, Spider-Man, X-Men, Thor, Iron Man, the Fantastic Four, the Incredible Hulk, Daredevil, and Ant-Man.