@Kendrix The Evil Kaworu if I remember correctly together with Black Adam was actually nothing more than a nickname for Armaros, since in the original Japanese version distributed in chapters instead than 5 volumes Shinji has a dream in which Kaworu's voice warns him of arrival of Armaros and describes the Black Giant as an Me who is not Me, a being who hates Music and Lilins.
It may be that in the original Japanese version Armaros was really a Black Adam / Evil Kaworu and then when ANIMA was collected in 5 Volumes the writers opted to change some things of the plot.
Another hypothesis of mine on how the Shinji of the previous world did become Armaros is this: In the Fourth Volume Kaji/SEELE informs Rei Quatre that in the previous world a battle took place between hundreds of Evangelions for obtain the Fruit of life (the bodies of headless stone in the Valley of the Human Body are precisely these defeated Evangelions). Shinji and the Evangelion Unit 01 of that world won this fight all against all, so perhaps proving to be the strongest Giant Shinji / Evangelion 01 of that world have unwittingly ended up proving worthy of being the ideal host for the Armaros that it would have favored Instrumentality in the world of ANIMA.
A lot of strange rumors about how absurd the ending of ANIMA was supposed to be had circulated on 4Chan for years. I even remember that in the Cute Male thread dedicated to Kaworu and Shinji there were those who stated that in the Japanese sites the readers of the last chapter of ANIMA said that Kaworu he would have promised to ANIMA Shinji to return to him after saving the incarnations of the Shinji of the future parallel worlds / cycles / realities and that even on the last page they were together on a beach and that this scene was a Prequel of the Rebuilds.
For me it is really a real pity that we will never know what Shinji will do with his Father, Asuka and the Moon problem ... I wish ANIMA got a sequel but I doubt it will happen,unfortunately we don't even know if ANIMA will ever get an Anime or Manga adaptation
Kendrix wrote:Observations with relation to Rebuild spoilers:SPOILER: ShowI guess ideas that were reused were an extra spear being magicked up, ghost Kaworu, and Yui being actually glad to see Gendo.
And of course, the giant moon.And the term "Final Impact", I guess. Oh, and EVAs turning into Adam-like 'radiant giants' that MUCH harder to control. The world tree bit meanwhile, reminds me of Gakuen Datenroku XDD Even if the lore, is, ab observed before, utterly incompatible.
Also, with the revelation that all the pilots are artificial, that might be one similarity between the Maris, for all that the semblance is mostly nominal.
Some people on 4Chan said that Japanese fans on 2Chan were discussing the possibility of ANIMA and Rebuilds being connected to each other or not.