Emma Frost

"Oh, they're all here! That's Emma Frost..."

-Captain Sauce

Before episode 1
Emma joined the X-men sometime before the series started.

In the main series
Emma is first seen in the first episode, tough Kevin doesn't interact with her.

The next day, Emma is seen dancing at Kevin's party. It appears that she wants to hire Black Widow in an effort to wage war on fast-food.

Kevin Sauce
The two didn't interact on screen, so it can be assumed that they're indifferent towards each other.

Personally and Traits
Emma appears to be quite flirty, as she wore only her underwear when Kevin first met her and danced very close to another guest at the party the next day.

Trivia
-She is the only member of the X-men that didn't interact with Kevin at all in the first episode.