Wein is best known as the co-creator of Wolverine, Swamp Thing, Storm, Nightcrawler, and several other characters.
Len Wein was born in New York City on June 12, 1948. After being introduced to comics while in a hospital stay at age 7, Wein began his love for comics as a reader and a creator. Wein, along with long-time friend Marv Wolfman, was active in the 1960s fanzine community as a writer and and artist.
Wein's first professional comics work was 1968's Teen Titans #18, for which he co-created the original Starfire (now known as Red Star), and went on to have runs on Justice League of America, The Incredible Hulk, Amazing Spider-Man, Thor, Iron Man, Fantastic Four, New Teen Titans, and more. Arguably his most iconic was revamping the X-Men title in 1975 with Dave Cockrum in Giant-Size X-Men #1, later passing the reins to Chris Claremont.
In addition to writing, Wein also served as Marvel's Editor-In-Chief in 1974, a DC editor on titles such as Watchmen and Camelot 3000, and editing Disney Comics in the early 1990s.
Wein is survived by his wife, Christine Valada, and several children.