According to a Facebook post from his brother, comics professional Paul Kupperberg, veteran artist Alan Kupperberg has passed away of thymus cancer at the age of 62.
Kupperberg's career in comics began in the late 1960's, writing for Marvel Comics' letters pages. By the '70's, he was working in production at DC before moving on to Atlas/Seabold in 1974. He returned to Marvel after Atlas folded, beginning a career as an artist and writer that spanned decades.
His Marvel tenure included work on Amazing Spider-Man, Incredible Hulk, Savage Sword of Conan, Avengers, Captain America, and more. He also single-handedly created the one-shot Obnoxio The Clown Vs. The X-Men, writing, drawing, and even lettering the book himself.
In his time at DC, Kupperberg worked on title such as Justice League of America, and Blue Devil, which he illustrated for a run of 19 issues.