Masters of the Universe and Teenage Mutant Ninja Turtles share a publishing date of 1982 and 1984 respectively, shared shelf space in toy aisles across the eighties, and share an enormous overlap in the fan base that bought both lines as kids. Mattel and Playmates kept the toy lines separate for forty years. The first formal crossover finally arrived in 2024 with Turtles of Grayskull, a co-publication between Dark Horse Comics (handling MOTU) and IDW Publishing (handling TMNT).
The comic itself is a four-issue miniseries plus a connected set of mini-comics packed in with the Mattel Origins Turtles of Grayskull figure assortment. The premise places Krang, Shredder, and the Foot in Eternia after a Technodrome misfire, with the Turtles arriving in pursuit and the Eternian heroes initially mistaking them for new monsters. By issue two the alliance against Krang and Skeletor has formed.
Cover art across the four-issue run rotated between Freddie Williams II (longtime Batman/TMNT crossover veteran), Tim Seeley (the Dark Horse Masterverse house artist), and variant work from Sweeney Boo, Karl Kerschl, and Pop Mhan. Williams’s covers carry the most direct visual reference to the 1980s mini-comic aesthetic, using a flatter colour palette and a thick black ink line that drops a Donatello-shell-meets-He-Man-pec composition straight into the Alcala lineage. Seeley’s covers run hotter on the palette and use more digital atmospheric overlay.
The mini-comics packed in with the Mattel Origins figures are the surprise success of the project. Four short stories, each tied to a specific figure (He-Man in a Half-Shell, Belly of the Beast Man, By the Power of PIZZA, and The Spirit of Gray-Shell), reprinted the small-format style of the original 1982 to 1988 mini-comics with modern colouring. These are now hunted on the secondary market by collectors who missed the figure release window and run twenty to forty dollars each loose.
For the main four-issue mini, NM copies of all variants are still close to cover price. The Williams II 1:25 incentive variant on issue one moves around $80 on eBay. The Mattel-exclusive convention cover variant from SDCC 2024 is the rarest item in the run and has hammered as high as $200.
Catalogue source: heman.fandom.com, Dark Horse Comics, IDW press materials (CC BY-SA 3.0).
