Possible Code Geass Crossovers
Just to remind that these characters do not belong to me
These are just some possible crossovers I have if someone would like to try this then be my guess unless I decided to do them myself
This is an idea to get you going if you want to proceed in doing this, you may want to go to Wikipedia for more info. In the final episode when Kamen Rider Agito Shining form attacked the Overlord of Darkness, Gouram (from Kamen Rider Kuuga since Agito was a direct sequel to it) came also in sensing danger; when the explosion happen it tore a ripped in reality and hurled Gouram now grown 6 meters in length from the energy with a Seed of Agito to the Code Geass reality, however a bit of the Overlords power also went there and later formed the buffalo lord, Taurus Ballista (from Decade) to destroy the Agito seed; There it takes place were Suzaku and Lelouch at gunpoint at the island with Kallen standing there. Suzaku was able to shoot Lelouch and his body goes into shock and Suzaku goes to subdue him while Kallen fled not taking who Zero's identity was, suddenly a meteor(later dubbed Zero's Requiem) appeared above them and under the Live command Suzaku fled leaving Lelouch to be crushed under it. However the Agito seed sensing the Geass power absorbed Lelouch within the meteor for a vessel.
About a year had passed and the meteor was still on the island until the Buffalo Lord had found it and the Ant lord army he created to destroy the Agito seed but sensing the Lords caused Lelouch to awaken but still in a feral state he becomes Exceed Gills (the proto-stage) and fights and weakens the Lord and later swims to Area 11 (Japan) and later found at the shore naked by some elderly married Elevens from Shinjuku. The Emperor only changed the memories of Nunally with Rolo and to stay at Ashford if C.C. would return and that Lelouch was killed during the Black Rebellion but has not told Nunally of that part. He would have lost his memory and his appearance changed a bit, his hair is white and when he activates his geass his eyes would change; thanks to the seed, have psychic abilities (like the person who becomes Agito from Decade)from his red right eye and canceling out Geass effects from his left blue eye (like the Dragon eyes from the Alter ring belt) and when being taking care by the elderly elevens they name him Rei and told him about what had happen to the country, Zero, and the failed black rebellion. When some Ant lords came by and wanting to protect the old married couple he finally able to become Agito.
Later on in the story when Guilford challenges him when he takes on the don of Zero to a duel the meteor comes by and then shatters, revealing a knightmare frame Zero calls the "Gouram Kūga(meaning clear-self)" 6 meters tall and the Amadam stone is on the center chest. When he calls Cho-henshin the Amadam changes color and the Frames armor changes form and color; Mighty red the default, Dragon blue, Pegasus green, Titan violet, and when it merges with the Shinkirou it becomes Ultimate form and when Agito is in shining form it becomes Rising Ultimate. The Lords will be able to merge with Knightmare frames and later grow and become frames themselves
this will be rated T and it will be a harem with Lelouch x C.C., Kallen, Kaguya, Milly, Shirley, and the Tianza