Transformers: Rise of the Dark Spark film series and the video game series, consisting of "Transformers: War for Cybertron" and "Transformers: Fall of Cybertron". The Dark Spark is a powerful artifact that is capable of ripping holes in dimensions, which brings two "Transformers" universes together. The story takes place before the Ark is launched in "Fall of Cybertron", while in an alternate universe it takes place before the events of "Age of Extinction". The game begins in continuity with the film, wherein a mysterious purple meteor crashes into Earth. The Autobots reach the crash site and Optimus sees an ancient Cybertronian relic called the Dark Spark,
The Transformers: Hearts of Steel staunch ally of Muldoon after the Decepticons betray him. Only four Autobots were mentioned by name in the series: Bumblebee, Ironhide (in the TPB when he gives his name it was changed to Sideswipe) and Optimus Prime although he did not appear, though others are recognizable as G1 Generation 1 characters, introduced as toys in 1984. The opposite is true for the Decepticons, with many being named. Others are left unnamed but are recognizable such as Ravage. In addition to their original alternate modes as fantasy beasts, the Transformers later adopt alternate modes appropriate to the era in which they