linguistic:paraphrasing
Final years (1981–1994)

In the early 1980s, Kirby and Pacific Comics, a new, non-newsstand comic-book publisher, made one of the industry's earliest deals for creator-owned series, resulting in Captain Victory and the Galactic Rangers, and the six-issue miniseries Silver Star (later collected in hardcover format in 2007). This, together with similar actions by other independent comics publishers as Eclipse Comics (where Kirby co-created the character Destroyer Duck in a benefit comic-book series published to help Steve Gerber fight a legal case against Marvel), helped establish a precedent to end the monopoly of the work-for-hire system, wherein comics creators, even freelancers, had owned no rights to characters they created.

In 1983 Richard Kyle commissioned Kirby to create a 10-page autobiographical strip, " Street Code ", which became one of the last works published in Kirby's lifetime. It was published in 1990, in the second issue of Kyle's revival of Argosy. Kirby continued to do periodic work for DC Comics during the 1980s, including a brief revival of his "Fourth World" saga in the 1984 and 1985 Super Powers miniseries and the 1985 graphic novel The Hunger Dogs. DC executives Jenette Kahn and Paul Levitz had Kirby re-design the Fourth World characters for the Super Powers toyline as a way of entitling him to royalties for several of his DC creations. In 1985, Kirby and Gil Kane helped to create the concept and designs for the Ruby-Spears animated television series The Centurions. A comic-book series based on the show was published by DC and a toy line produced by Kenner.

In the twilight of his life, Kirby spent a great deal of time sparring with Marvel executives over the ownership rights of his original page boards. At Marvel, many of these pages owned by the company (due to outdated and legally dubious copyright claims) were given away as promotional gifts to Marvel clients or simply stolen from company warehouses. After the passage of the Copyright Act of 1976, which greatly expanded artist copyright capabilities, comics publishers began to return original art to creators, but in Marvel's case only if they signed a release reaffirming Marvel's ownership of the copyright. In 1985, Marvel issued a release that demanded Kirby affirm that his art was created for hire, allowing Marvel to retain copyright in perpetuity, in addition to demanding that Kirby forego all future royalties. Marvel offered him 88 pages of his art (less than 1% of his total output) if he signed the agreement, but reserved the right to reclaim the art if Kirby violated the deal. After Kirby publicly slammed Marvel, calling the company thugs and claiming they were arbitrarily holding his creations, Marvel finally returned (after two years of deliberations) approximately 1,900 or 2,100 pages of the estimated 10,000 to 13,000 Kirby drew for the company.

For the producer Charles Band, Jack Kirby made concept art for the films Doctor Mortalis and Mindmaster, which were later released as Doctor Mordrid (1992) and Mandroid (1993), respectively. Doctor Mordrid began as a planned adaptation of the Marvel Comics character Dr. Strange, but Band's option expired.

For Topps Comics, founded in 1993, Kirby retained ownership of characters used in multiple series of what the company dubbed " The Kirbyverse ". These titles were derived mainly from designs and concepts Kirby had kept in his files, some intended initially for the by-then-defunct Pacific Comics, and then licensed to Topps for what became the " Jack Kirby's Secret City Saga " mythos. Phantom Force was the last comic book Kirby worked on before his death. The story was co-written by Kirby with Michael Thibodeaux and Richard French, based on an eight-page pitch for an unused Bruce Lee comic in 1978. Issues #1 and 2 were published by Image Comics with various Image artists inking over Kirby's pencils. Issue #0 and issues #3–8 were published by Genesis West, with Kirby providing pencils for issues #0 and 4. Thibodeaux provided the art for the remaining issues of the series after Kirby died.