4 is Emma Frost.
EDIT: Dang, @Veitha beat me to it, haha.
Still need #2 answered
Ok. Here’s some hints.
Not counting the current Krakoa era, the mutant on #2 has been on both villainous mutant teams and good x-teams.
In their first appearance they were disguised as a person of color.
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omg!
Coveredinbees wins!!!!!
And gets to choose the next 4 questions.
1. What is Kate Pryde's favorite band? She says they're even better than Lila Cheney!
2. In X-Factor, what real Manhattan resturant did Scott take Jean, Beast and Trish Tilby for a double date? This resturant is now closed.
3. Who sent the New Mutants to Asgard the second time?
4. What real news station invited Dr. Davis Moreau and Dr. Moira MacTaggert for a debate? Bonus: What was the program called?