Actually Juggernaught is unstoppable because of the power of, if i recall, "the crimson gem of cytorak" or so, (in the comics, at least) and when in motion he physically cannot be stopped. Literally. The helmet is not armour per say, it is usually some kind of anti-psionic thing, because that's his only real weakness.
(afaik in the movie he is merely a mutant. In the comics, he isn't a mutant at all, merely mystically empowered.) Calisto is not particularly flashy. she's just stronger than normal, with the senses etc, yeah. It's a shame, almost, but she looks a lot prettier in the movie than her traditional appearence.
The Xavier "dying"/magneto changing storyline from the series, by the sounds of it, is based on an old storyline in the comics(duh), where Xavier is wounded, and only the Shiar have the technology to save him. (it happens at the end of a storyline involving magneto standing trial/facing up to what he'd become, and he gets left in charge of the "new mutants" in xaviers stead. a good storyline, that one). (so, like, no. Xavier doesn't die in the end of the series, because the storyline it's stolen from is exactly the same. but he's basically gone, after that. )
The pheonix-jean grey thing, oh brother. yeah, awkward ret-con and generally awkward labeling.
Originally, the pheonix was a primal universal force, no awareness. yada yada yada, it happens across jean grey, trying to pilot a shuttle back to earth during a massive cosmic radiation event, (no chance of success, she was dying.) It takes her place, saving the x-men and putting her body in the regenerative "pod", that the avengers later find, because the damage was that severe, and because it could then have fun literally being Jean Grey. (though throughout the Pheonix saga it is assumed, in a nod to the fact that it's retconned heavily, that the pheonix was at least conciously convinced it actually was jean grey.)
However, i'm pretty sure that seperate from the pheonix saga, and the whole daughter-from-the-future thing (rachel, who iirc possesses a portion of the pheonix's power, or did perhaps?) Seperate from all that, Jean does or eventually will use the code-name Pheonix, and it can be used in the original sense as referring to the ultimate expression of Jean's mutant potential. Cause, you know, retconning the original saga isn't confusing enough.
I'm guessing the ugly and/or cross dressing fellows in the back of the picture are random morlocks.
[edit] Oh, and the "aliens R dumb" thing is one of the reasons i am less interested in the self-conciously gritty "ultimate" brand. There won't be any, because they don't fit in the whole little trilogy thing, but cross dimensional, cross time, and interstellar adventures are as integral a part of "the X-men" as the racism/prejudicial parallels. Of course, the movies being mostly based on the ultimate x-men, you alien-hating peeps are pretty comprehensibly safe.[/edit]
