Hasbro Universe

• Earth-616 / Marvel Universe
  • The Micronauts
  • Rom: Spaceknight
    • SpeceKnights
  • The X-Men and the Micronauts
• Earth-91274
  • G.I. Joe: A Real American Hero
  • The Transformers

• G.I. Joe vs. The Transformers (Image Comics, 2003)
• G.I. Joe vs. The Transformers II (Devil's Due Publishing, 2004)
• G.I. Joe vs. The Transformers III: The Art of War (Devil's Due Publishing, 2006)
• G.I. Joe vs. The Transformers IV: Black Horizon (Devil's Due Publishing, 2007)

• Transformers/G.I. Joe (2004)
  • Transformers/G.I. Joe: Divided Front (2004)

• Hasbro Comic Book Universe (2005-2018)[2][3]
  • The New Avengers/The Transformers (with Marvel Comics)

• Justice League/Transformers (2011, with DC Comics, cancelled)
• The Transformers vs. G.I. Joe (2014)
  • The Transformers vs. G.I. Joe: The Movie Adaptation (2016)

• Rom: Dire Wraiths (2020)[4]

• Transformers/My Little Pony: Friendship in Disguise! (2020)[5]

• Unit:E (2011, San Diego Comic-Con)

• When Worlds Collide (2017, HasCon)

From 1983 to 1987, Sunbow Productions and Marvel Productions developed the series G.I. Joe: A Real American Hero, The Transformers, Jem and Inhumanoids. These series had been hinted to share the same universe, mostly due to the appearance of the character named Hector Ramirez.

The Transformers Aligned Continuity (comprising the animated series Transformers: Prime and Transformers: Robots in Disguise; currently owned by Hasbro's Allspark) features a reference to M.A.S.K. as a division of the United States military that developed a special vehicle.[6][7]

On March 28, 2014, producer Lorenzo di Bonaventura announced that he is open to doing a crossover film between the Transformers and G.I. Joe film series (Paramount Pictures and MGM).[8] On June 23, di Bonaventura stated that a crossover was not likely to happen,[9] but on July 9, he reassured there would still be a possibility.[10] On October 23, 2015, Chu confirmed his intentions to make a crossover film between Jem (Universal Pictures) with Transformers and G.I. Joe.[11] On October 29, he hinted about Transformers possibly doing crossover with other Hasbro products.[12] On January 18, 2017, D. J. Caruso has stated that when he was in talks to be GI Joe 3's director, the discussion included a Transformers and G.I. Joe meeting. However, Paramount did not think the time was right to do so because they did not want to infringing on Michael Bay's running of the Transformers films.[13]

On December 15, 2015, Hasbro agreed with Paramount to a deal creating a five-property movie universe by financing unit Allspark Pictures and distributed by Paramount Pictures. This new universe will consist of the current G.I. Joe film series alongside future film adaptations based on M.A.S.K., Micronauts, Rom and Visionaries.[14] On April 21, 2016, The Hollywood Reporter confirmed that Lindsey Beer, Michael Chabon, Cheo Hodari Coker, Joe Robert Cole, John Francis Daley, Jonathan Goldstein, Jeff Pinkner, Nicole Perlman, Nicole Riegel, Geneva Robertson and Brian K. Vaughan have joined the writers' room for the cinematic universe.[15]