The first two movies deal with Shion, Miyuki and Canaan infiltrating a Vector division. They are there to make a back up of some data, what it exactly is, is unclear to me, but it seems to have something to do with Vector wanting to use the power of the UMN.

They are attacked by a Gnosis, and we see the first footage of battle. Overall impression is that it moves a lot more fluent than in EP II, character switching works fine, but it does look like you have a lot of commands at your disposal. Battle theme's nice, but not as good as the one from EP I. Miyuki also seems to fight the exact same way as Shion, same weapon and all. After the fight, more Gnosis show up and the party escapes in ES. The unknown pilot says "This way, REALIAN", I wonder who she means with that? During the escape, Shion has some vision of Abel, she receives some sort of warning, and she tells Miyuki to disconnect. Does this mean that they are in the Encephalon?

The third movie is the most interesting. The first scene is Shion trying to convince Kevin to stop doing something. After that, we see more footage of Yuriev (one of my favourites), but I can't hear what he says because of the pretty good music.

The next scene is pretty important I think, but I don't understand everything. I THINK that T-Elos says that not Shion is the child of Maria, maybe she's the marienkind that the zohar refers to? After that, we see another fight with Voyager, I think it's a different one since I don't see the device he activates in the second trailer. Next is a short scene futuring Yuli Mizrahi, Shion and Abel. It looks to me as if Shion doesn't know him, but Yuli is familiar with him.

Another scene wit T-ELOS, who seems to be searching for the "thirteenth key", in order to awaken (not sure if she means her awakening or KOS-MOS). And finally, we see more battle footage, like Jin-Margulis in ES, and the party against T-Elos.

So, is Albedo good or something? Negrido is the bad one? Just picked the last boss up after a few months - forgot the whole plot ._.

Here's the short version:

Well Negrido is good, but we learn that Yeriev(the father guy of the urtvs) has locked his personality inside Negrido. Thus, Negrido => Yeriev at the end of XSII and we do not know yet if Yeriev is acting to aid shion and pals.

Albedo is Jr's other half and friend, but he's still messed up and will still be fighting on the side of the "circle of zarathustra" = cloaked guys + whiehelm

(forgive my spelling XD)

I'm curious about Nigredo's role as a URTV. He is referred to as an executioner, and he managed to blow of Albedo's arm by nothing but psychic powers. I don't think he himself is evil though

As for Yuriev's role, he won't be helping Shion & co, I think. His only interest is the zohar and U-DO. He also poses a threat to Wilhelm and the circle, according to the Pied Piper script. In the first trailer, I think, we see Yuriev activating the zohar and the emulators, and the party storms in to stop him. For me, he's easily one of the most interesting characters, even better than Albedo imo.