The Dedicated #4 X-Overs thread

Currently, to my knowledge, everyone is stuck on #4 of the X-Overs quest. The calls for help have, from my analysis gotten to the point that they're flooding threads where people are looking for help with other Quests. So, I am starting this thread to focus on that specific quest and if someone completes the quest, this lets people more easily find information on the quest.
 
If, somehow someone solves this quest, please post hints here so we can all find them more easily. If the person who wrote the quest wants to give us a hint (and we'd really appreciate if if they did), please post it (or re-post it) here so it doesn't get lost in another thread.
 
If you want to post in this thread that you're stuck, please do so once, so when we start getting actual hints, we don't lose them between people saying they're stuck. (Now, if the hint doesn't help, you can still quote the hint and say something to the effect of "I don't get it".
 
Hopefully we'll finally get this quest solved soon.

I have no idea. My advice would be to just go to key story arcs for each X-Man. I have done Kitty, Kurt, Cannonball, Cyclops, Emma, Colossus, Rogue, Iceman.

This still hasnt been solved? WTF ;p;

man I was hoping that it would be solved while I was asleep and I could get some hints now  :(

I have all but one. I went through the entire storyline page. No idea what I'm missing.

I've done all x-men storylines I know off and all major Marvel ones and still no luck... I'm beginning to think it's a crossover with a different company now >_>

I'm glad to know that I'm not the only one who hasn't found #4. I just tore through the X-Men story arcs....and nada. It's a mystery....

no 4 here either yet. and like some others, i actually checked every Story Arc listed,
including some that are not.

WTF IS IT!!!!!!!????

I have no idea. NO idea!

I think everyone has the same problem. Surely there must be a bug, because I saw all the story arcs of the site and not find it. 
And it has to be a story arc, otherwise it would not respect the criteria of the rest.

I have went through every arc I can think of. Out of ideas.

Sorry, but the X Marks The Spot Help thread already covers this topic.  Please don't create duplicate threads just to complete more Quests... Get creative & post new threads :)