My Little Pony/Transformers II — IDW Publishing
Issue: #4
Spike and Grimlock return! When the Dinobots are attacked by Sombra's minions, can Grimlock's little purple buddy save everycreature? And don't miss the epic conclusion to the hit crossover series! Is friendship really magic? Can Transformers and ponies really work together? And how in the world are they going to stop Sombra?!
Creators: Luis Antonio Delgado, Joana Lafuente, Neil Uyetake, Jake M. Wood, David Mariotte, Ian Flynn, Casey W. Coller, Jack Lawrence, Megan Brown, James Asmus
Characters: King Sombra, Shockwave, Megatron, Mirage, Optimus Prime, Rainbow Dash, Applejack, Twilight Sparkle, Smolder, Fluttershy, Pinkie Pie, Rarity, Ratchet, Superion, Bumblebee, Scorponok, Trailcutter, Elita-One, Grimlock, Spike