Justice League Transformers: the Beginning
17 parts Complete In this story the Flash, Green Arrow( who didn't die in Crisis),Supergirl, the Legends, Batwoman, and Black Lightning's earths are merged after Crisis. Optimus Prime and his Autobots(Bumblebee, Ironhide, Ratchet, and Jazz) land on their Earth looking for the Cube before the Decepticons get it. While they look for it, the Autobots will have to team up with Earth's heroes to take down Megatron and his Decepticons. New friendships will be made and new enemies will be made. There might be a Supergirl x Optimus Prime in these stories.