G.I. Joe vs. the Transformers: Black Horizon is the fourth GI Joe/Transformers crossover miniseries published by Devil's Due Press. It was published in 2007 as two double-sized issues, and is set in the Devil's Due crossover continuity.
|Black Horizon issues:|
|#1 | #2|
Preceded by: G.I. Joe vs. the Transformers: The Art of War
The book is in continuity with the previous three minis, following up on the events of G.I. Joe vs. the Transformers: The Art of War. It focuses on later characters and concepts from both franchises, with more obscure (and stereotypically less popular) groups such as Cobra-La and the Pretenders serving prominent roles. Much of the series is flagrantly over-the-top in concept, and despite its world-shaking premises, the book refuses to take itself overly seriously.
The action centers on the coming of Unicron to Earth, a first in Transformers fiction. Unicron came once before in ages past, but the ancient underground kingdom of Cobra-La forced a negotiation: they would retreat underground, allow humankind to proliferate, and Unicron would return later to scour Earth when humanity had covered it with tasty technology and become more fit to work as slaves inside of Unicron.
Cobra-La's only mistake is allowing Joe Colton, the original G.I. Joe, to remain as a prisoner in their confines. Colton meets up with a small team sent to track down Cobra-La, while Flint and Cosmos attempt to take on Unicron himself!