Shooting Star Rockman Tribe

Shooting Star Rockman Tribe is a anime based in MegaMan Star Force 2, and sequel of the MegaMan Star Force anime. It takes place a few months after the events of Shooting Star Rockman. All the EM Viruses have disappeared and the Earth is at peace. However one day viruses unlike those seen before, and two mysterious men attack the Museum where the Sword of Zerker is held. These men are Hyde and Rich Dotcom with their UMA. They fight with each other over the artifact, only Omega-Xis accidentally eating it. Later, Geo meets Dr. Vega and she informs him of the continent of Mu and the OopArts. Rogue arrives and attacks Geo and Omega-Xis to take the OopArt. They are quickly defeated but Dr. Vega manages to drive them off with an EM weapon.

She then reaquests that Geo and Omega-Xis find the other OopArts and stop Rich, Hyde and Solo from getting them. While travelling across the world in search for the artifacts, Megaman finds himself frequently struggling with his adversaries, while also finding out that he needs to master his new Thunder Zerker form, granted by the OopArt. Eventually, Rich Dotcom and Yeti get their hands on the Dinosaur Fossil, whilst Hyde and Ghost claim the Shinobi Star. A three-way struggle ensues between them in attempts to claim the other OopArts, but eventually it is revealed that Dr. Vega wants the OopArts for herself to resurrect Le Mu.

Hollow then proceeds to extract the OopArts from Yeti Blizzard and Dark Phantom. Due to the three OopArts resonating with each other, the portal to Mu has opened. Hollow and Vega enter the portal, closely followed by MegaMan and Harp Note, who want to stop Le Mu from resurrecting. Dark Phantom and Yeti Blizzard also follow Vega, having been promised eternal life. There, Hollow takes the final OopArt from Omega-Xis after Omega-Xis terminates EM Wave Change to spare Geo from Hollow's attacks. As Vega proceeds with the resurrection of Le Mu, Geo and Harp Note find Solo, who was also entasked with the mission of preventing the reappearance of the Mu continent. Geo eventually finds Omega-Xis, changes to MegaMan, and attempts to stop Le Mu's resurrection by removing the OopArts. Eventually, this results in the 3 OopArts resonating with him, transforming him to Thunder Zerker, then briefly to Zerker Ninja and Zerker Saurian, ending with Tribe King. Hollow attempts to stop him, but a single blow from Tribe King kills him.

With Le Mu being resurrected, MegaMan, Harp Note, Yeti Blizzard and Dark Phantom escape through the portal back to Earth. However, the portal grows larger as Le Mu attempts to crawl through to the other side. At this moment, Rogue appears, commanding MegaMan to destroy the portal as he holds off Le Mu, sealing him with it for good. MegaMan does so using Czar Delta Breaker, sealing off the continent, with Le Mu and Rogue. Once again, the Earth is safe.

Trivia
Judged from the opening, it appears that Capcom had initially planned for the appearance of the Wood Ninja and Fire Saurian transformations, but were forced to end the show early. Should the show have continued, these transformations and other Double Tribes may have had a chance to appear, too.