The Transformers: Robots in Disguise #28

EARTHFALL! The AUTOBOTS return to Earth—with OPTIMUS PRIME in command! But what brought them back—and what terrifying secret do the humans hold? A bold new era begins here!

Characters: Alpha Trion, Arcee, Blitzwing, Bluestreak (Autobot), Brawl (Autobot), Bumblebee (Autobot), Buster (Dog), Buzzsaw, Circuit, Cosmos (Autobot), Galvatron, Ironhide, Jazz (Autobots), Jetfire, Kup, Lazerbeak, Longtooth, Marissa Faireborne, Megatron, Optimus Prime, Prowl (Autobots), Ravage, Sideswipe, Sky Lynx, Soundwave, Thundercracker, Wheeljack, Windblade (Autobot)