Manga
The Shooting Star Rockman manga began running in CoroCoro Comic in November 2006. The manga differs vastly from the video-game and anime iterations of the franchise, although the premise is set up similarly. Geo is grieving the disappearance of his father and questioning the unusual partnership he has gained with the "FM-ian" Omega-Xis. By combining their powers, they are able to transform into the EM Wave Human named Mega Man and battle crime. Geo soon learns of the Wave Coliseum, a tournament that awards the champion a power known as Star Force. Geo believes this power will allow him to travel to space and find his father, so he enters the tournament. However, complications occur when one of the competitors, Gemini Spark, steals the Star Force in order to revive Andromeda, the king of the FM-ians. This story arc concludes with Mega Man discovering that Andromeda and his father Kelvin had fused as a single EM Wave Human. Defeating Andromeda, Kelvin is freed and returns to Earth to live with his family and new FM-ian friends.
From chapter 17 and on the story shifts to focus on characters and concepts from the second video-game. However, Geo and Omega-Xis are completely absent. Instead, the three Tribe-On transformations from the second video-game—Thunder Zerker, Fire Saurian, and Green Ninja—are personified as entities of their own. In the past, their tribe was ravaged by a warrior named Rogue. Having grown up, Zerker has taken on the task of invading the continent Mu and hunting down Rogue for revenge. But in order to reach Rogue, Zerker must first traverse an eight story tower and battle Rogue's underlings every step of the way, including Saurian and Ninja who are under the influence of Mu.
Another manga was also serialized in CoroCoro Comic by Kawano Takumi called Farce On Air!! Shooting Star Rockmen (笑劇オンエア!!流星のロックメ～ン, Shōgeki On Ea!! Ryūsei no Rokkumen?), a light-hearted story that appears to focus on two separate Mega Men.
In order to promote the third installment of the video-game series, Ryo Takamisaki (author of the MegaMan NT Warrior manga) produced a new manga series to run in CoroCoro Comic as of November 2008. Entitled simply Shooting Star Rockman 3 (流星のロックマン3, Ryūsei no Rokkuman Surī?), this manga does not reference the previous works by Itagaki and more closely follows the concepts and premises defined by the video-game franchise. The manga introduces A. C. Eos and his Wizard Acid, as well as battles with a Noise-corrupted Spade Magnes and Jack Corvus.
As of the January 2009 issue of CoroCoro Comic, the manga has concluded after only two chapters for unknown reasons, indicated by an owari on the final page. As two chapters is not enough to fill a single tankōbon, it's doubtful Takamisaki's version will receive a separate release unless it is picked back up for serialization in the future.
Read more about this topic: Mega Man Star Force (anime)