The Transformers: Robots in Disguise #21

Four mechanical figures — rendered in cool blue-grey tones against a radiant, concentric-circle backdrop — fill this cover with kinetic energy, their varied robot modes suggesting a team caught mid-scramble before something big. The bold "Dark Cybertron Prelude" badge in the corner signals that this issue from the creative team of Barber, Griffith, Ramondelli, and Tramontano marks a turning point heading into a larger crossover event. If you've been following IDW's Robots in Disguise, this is the issue to have in hand before the storm arrives.