Masters of the Universe/Teenage Mutant Ninja Turtles: Turtles of Grayskull — Dark Horse Comics
Issue: #1
By the power of Grayskull…Turtle Power!When the Teenage Mutant Ninja Turtles came across Krang and Shredder making a deal with some otherworldly 'demon-mage' named Skeletor, things got hella-weird and they ended up in ETERNIA! It turns out, when you mix Ultrom mutagen with demon magic you get a nasty purple poison — and it's brought Eternia to the brink of chaos. So, Leo, Raph, Donnie, and Mikey a...
Creators: Andrew Dalhouse, AndWorld Design, Freddie E. Williams II, Tim Seeley
Characters: He-Man, Skeletor, Raphael, Donatello, Michelangelo, Leonardo