Stan Lee -- the legendary Marvel comics writer, editor, and publisher -- had died. He was 95.

Lee, who reportedly had significant health issues in 2017, died Monday morning at Cedars-Sinai Medical Center in Los Angeles, reports The Hollywood Reporter.

He is known to legions of comics fans as the creator or co-creator of such Marvel characters as Black Panther, Spider-Man, the X-Men, Iron Man, and the Fantastic Four.

Lee is also a popular fixture in several of Marvel's movie adaptations, where he made much-anticipated cameos. He recently cameoed as Peter Parker's bus driver in "Avengers: Infinity War" and as the owner of a shrunken car in "Ant-Man and the Wasp." Below is a screenshot from his cameo in 2017's "Spider-Man: Homecoming."

"Excelsior," indeed...