Mobile Suit Gundam Zero

Mobile Suit Gundam Null (Japanese: 機動戦士ガンダム ヌル Hepburn: Kidō Senshi Gandamu Naru), also known as Gundam Null, and G-Null (G-〇), is a 202X Japanese mecha anime series and the XXnth installment in Sunrise's long-running Gundam franchise. Created and proposed by Shinji Wakamatsu, it details a multiverse story set 300 years in the future and the protagonists' attempts to end the invasion.The story was also noted for its similarities with Kamen Rider and Tokusatsu series, with Kamen Rider Decade and Zi-O cited as heavy influences. It also serves as a sequel to Gundam 00, as one of the protagonists is revealed to be Saji Crossroad. Also, several characters from previous Gundam series also return to either aid or hinder the heroes. Character designs for the original characters were made by Yun Kouga, with Shinji Wakamatsu directing and Toshiki Inoue penning the script. The tagline is "Nullify the End, Become a King!"

The series is unveiled by Bandai in June 2, 202X, and began airing in MBS in September 3, 202X.

Synopsis
The story begins in 2321 AD, in a timeline considered separate but parallel to those of Mobile Suit Gundam 00. A  Japanese Self-Defense Force pilot named Ryowa Takei was on a US-Japanese military exercise with his mobile suit battalion in Japan, when his world is suddenly attacked by enemy mobile suits from other Gundam timelines, but with their color schemes being more alien and seemingly attacking this world alone. Militaries around the world were mostly overwhelmed. As hope was seemingly lost, his ordinary mobile was struck by an unknown object and suddenly his mobilt suit transforms into a Gundam, repelling the invaders. Amazingly a US tank suddenly transforms into a Gundam based on the Virtue and named Tusker, fended off the rest of the invaders from an unknown dimension. The pilot of that green mobile suit then turned to Ryowa and told that his world was merged with the others, and is going to an end, find those behind this merger, and must find allies from the other universes. The pilot is revealed to be Saji Crossroad from Gundam 00, but he is currently residing in this parallel universe and joined the US Army under the false name of Sandy Cross. Ryowa and Saji sets off with a mission to stop the so-called Zero Hour, a plan named by a cabal called Maitreya that entailed the destruction of the worlds and control by Maitreya. Saji also intends to find his wife Louise Halevy, whose whereabouts are unknown.

They were later aided by a Chinese Marine named Fang Youming who had a Gundam called Drake transforming into an attack helicopter based on the Shenlong Gundam, Allister McTavish, a Royal Navy intelligence officer having a sniper-type Gundam named Swordfish based on the Gundam Abyss, and Pyotr Zotov, a Russian Space Force captain who had a Gundam similar to the Rick Dias from Zeta Gundam called Comet but with a head more similar to the Bolt Gundam, who is also the captain of a space warship. All of their Gundams are revealed to be created from the so-called King Project.

Opposing them is the Maitreya's Special Dispatch Squadron, who wanted to keep the masquerade of multiversal invasion and anticipating the Gundams' moves, and uses brainwashed characters from previous Gundam series.

As the story progresses, Keio discovers the truth about the King Project and was revealed among with previous Gundam protagonists, to be one of the proposed "Zero Kings", the one that will destroy their own worlds with one strike, to stop the, with the others already revealed to have already done, and as for example, the Moonlight Butterfly incident was done by a future Loran Cehack who despaired of his wife's death, Domon Kasshu's Gundam merging with the Devil Gundam and destroying the Earth and the Colonies, Heero Yuy making his Gundam the controller for the Libra satellite, etc. Keio would have none of this, but Saji insists that he would be the final one and he wouldn't, Saji would do it in his stead, and Saji did not like it either. Reluctantly, after his love interest was supposedly killed in a Maitreya attack, Keio agrees become a Zero King, to be the final one and the one that will instead save the worlds.