Stan Lee, the legend behind the most of Marvel Universe, who co-created some of the most iconic heroes like The Avengers, Spider-Man, and the Fantastic Four, died on Monday (12 Nov) at the age of 95. Lee was taken to Cedars Sinai Medical Center in Los Angeles on Monday after suffering a medical emergency and was declared dead shortly afterward.

Stan Lee started the Marvel Universe with Jack Kirby in 1961 with The Fantastic Four. Again working with Kirby, Lee also co-created the Hulk, Thor, Iron Man, and the X-Men; with Bill Everett, Daredevil; and with Steve Ditko, Doctor Strange and Marvel's most successful character, Spider-Man. Lee and Kirby gathered several of their newly created characters together into the team title The Avengers and also revived characters from the 1940s such as the Sub-Mariner and Captain America.

In 1972, Lee stopped writing monthly comic books to assume the role of publisher. His final issue of The Amazing Spider-Man was #110 (July 1972) and his last Fantastic Four was #125 (August 1972).

Lee made cameo appearances in many Marvel film and television projects, including those within the Marvel Cinematic Universe. A few of these appearances are self-aware and sometimes reference Lee's involvement in the creation of certain characters. He had completed the filmed footage for his cameo in the upcoming fourth Avengers film prior to his death.

A lot of Marvel stars and friends of Stan Lee, Robert Downey Jr., Chris Evans, Sebastian Stan, Tom Holland, Mark Ruffalo, Jennifer Lawrence, Ryan Reynolds, Dwayne Johnson, and many more gave tributes to him.

Here's what stars said about his death:

Robert Downey Jr.

Chris Evans

Chris Hemsworth

Dwayne Johnson

Here's a tribute video for all Stan Lee's cameos:

Image Credit: Marvel Studios