Don Heck was an American comic book artist and writer, not a creator of anime or manga in the original sense, but his work as a co-creator of numerous Marvel Comics characters forms the basis for many anime and manga adaptations. Born Donald L. Heck on January 2, 1929, in the Jamaica neighborhood of Queens, New York, he began his career in the comics industry in 1949, working for companies like Harvey Comics before joining Atlas Comics, the precursor to Marvel Comics, in 1954.

Heck is best known for his significant contributions during the Silver Age of Comic Books. He was one of the primary artists and co-creators of several iconic Marvel characters. Notably, he co-created Iron Man, who first appeared in Tales of Suspense 39 in 1963, collaborating with Stan Lee, Larry Lieber, and Jack Kirby, with Kirby designing the armor and Heck establishing the look of Tony Stark and supporting characters. Heck also co-created the Black Widow in Tales of Suspense 52 (1964) and Hawkeye in Tales of Suspense 57 (1964). In addition, he had a long and defining run as the penciler on The Avengers series from issue 9 (1964) through issue 40 (1967), contributing to the development of the team and co-creating characters like Wonder Man, the Swordsman, and the Living Laser.

The search results confirm that the anime and manga works listed in the user query are directly tied to Heck's role as an original creator of the underlying Marvel characters. The 2013 anime film Iron Man: Rise of Technovore is based on the Iron Man character co-created by Heck. Similarly, the anime television series Marvel Disk Wars: The Avengers and Marvel Future Avengers, as well as the manga Avengers: Age of Ultron Episode 0 and Avengers: Zombies Assemble, all credit Heck as an original creator for the characters that appear within them, such as Iron Man and Black Widow. These credits acknowledge his foundational work in the 1960s, which continues to serve as the source material for new productions in different media and regions.

Throughout his career, Heck's artistic identity was defined by his clean, sharp style and his ability to bring a sense of realism and character to his work, though he was often considered underappreciated by contemporaries. Comics artist Jerry Ordway described his work from the Atlas era as "terrific, with a clean sharp style, and an ink line that wouldn't quit". He was skilled in a variety of genres, including war, science fiction, romance, and superheroes, and he often inked his own pencil work. After his prolific period at Marvel, Heck also worked for DC Comics in the 1970s on titles such as The Flash and Wonder Woman.

Don Heck's industry significance lies in his foundational role in the Marvel Comics universe. His artistic contributions and co-creations helped define some of the company's most enduring characters and teams. His work from the 1960s has not only remained in print for decades but has also been adapted into various forms of media, including the anime and manga productions noted in the user's query, cementing his legacy as a key figure whose creations transcend their original medium. He died of lung cancer on February 23, 1995, at the age of 66.