[quote=@ShwiggityShwah]
I might be missing something but what is the partner's role in this story?  Are they the narrator for emily or that 'M Siege' thing mentioned?  And what is it exactly, a power attached to her shield?  I'm trying to wrap my head around it.
[/quote]

Great questions

Emily is the only one that can't get off the ride, she's trapped slipping from continuum to continuum

The partner would be under the control of the player and what they see their role as anything they can come up with 

You can re-imagine that character you play 

Nightcrawler became the Warlord of Mars

[img]https://vignette.wikia.nocookie.net/marveldatabase/images/0/0b/Excalibur_Vol_1_16.jpg/revision/latest/scale-to-width-down/300?cb=20080121060338[/img]

http://marvel.wikia.com/wiki/Category:Siege_Perilous_users

Others have gone through it as well

I know this needs work; I was hoping for input so that my partner didn't feel confined

As for the Siege I decided this one has sort of attached itself to her shield