D-Void

The D-Void is a cosmic force from the Generation 1 continuity family.

The D-Void is a mysterious dark entity that resides within the shadows of the Dead Universe and is the personification of it. A black mass of tentacles, this creature seeks to devour the life of entire worlds in order to satiate its hunger. He is described as being an unbelievably powerful being with the capacity to return the spark to a deceased Transformer and is able to drain energy from Cybertronians to feed on them. Ain't that familiar?

Fiction

IDW Generation 1 comics

The D-Void was responsible for creating a trans-dimensional portal from the Dead Universe into the main reality, where it manifested initially as a lake on the world of Gorlam Prime. Once it formed, the D-Void used a lure that drew the cybernetic inhabitants of Gorlam Prime into the pool, where the entirety of the planetary robotic population's sparks of life was devoured in order to awaken it. Following that moment, the lake transformed into a sphere that served as a portal to the creature's realm as it began its plan to enter into the normal universe. Galvatron, after being empowered by the Heart of Darkness, journeyed through the portal, where his unique energy caused the D-Void to hunger for his spark. This caused a shaken Galvatron to flee back to the Gorlam Prime portal, where he decided to rally an army of Autobots and Decepticons to fight the emerging threat of the D-Void, as it now intended to feast on Cybertron.Heart of Darkness #2 Unknown to Galvatron, the Heart of Darkness and D-Void were in fact one and the same with the entity using it as a means of getting purchase to the normal universe. Its intentions towards Cybertron was because the Transformer homeworld was dead and through the oblivious Galvatron it turned to turn the whole planet into a giant portal between the Dead Universe to the normal one. From this planet-sized portal, the D-Void would enter into the universe where it would fuse with everything and kill all life. Chaos #4

The D-Void later returned Nemesis Prime's spark to his body, remaking him with the intent of sending him back as his vessel to reclaim the Heart of Darkness from Galvatron. Nemesis was ejected from a portal on Dykayra, where he took down Galvatron's makeshift army by draining their energy with a shockwave technique. Declaring that the universe would be his prey, he attacked Galvatron himself, but was driven back to the portal. Nemesis/D-Void believed that Galvatron intended to use the portal to empower himself, but Galvatron smugly revealed that he was only distracting Nemesis while his full army arrived with the strength to throw the D-Void back into the Dead Universe. After the portal was destroyed, Galvatron quieted Cyclonus's claims of victory by explaining that Nemesis was only the D-Void's harbinger. To prepare for the D-Void's return, Galvatron attempted to recruit Optimus Prime to his side, but was rebuffed, and instead decided to make his first line of defense at Cybertron, where he knew the D-Void would strike first.Heart of Darkness #4

Both Hardhead and Arcee revealed the truth about D-Void's intentions and that it planned to trick Galvatron into bringing the Heart of Darkness inside Cybertron. Galvatron was under the mistaken belief that the Heart of Darkness would help destroy Cybertron thus preventing the Expansion of the Dead Universe to the normal one. Thus, he thought he was saving Cybertron when in fact he was aiding in its destruction. Optimus Prime moved to stop him as Galvatron heading towards Vector Sigma with the aim in throwing the Heart of Darkness into the Primal Wellspring. After the destruction of the Deceptigod, Galvatron felt had suffered a massive injury through the Heart of Darkness. Prime along with his team proved too late as Galvatron had already fed the Heart into the Core which created the portal through which D-Void began to emerge where it began consuming the entire world along with its inhabitants. The D-Void was ultimately stopped when Optimus Prime used the Matrix of Leadership to defeat it. Chaos #4