Natalia Romanova

"Flirty introduction with Black Widow? Sure."

-Captain Sauce

Before episode 1
At an unknown point, Natalia moved to Oasis Springs with the rest of the Avengers.

In the main series
Natalia is first seen in episode 2 when she put some ingredients in a bowl and then abandoned it. Perhaps she was preparing them for Nick Fury, who was also cooking something. Kevin tried to flirtily introduce himself, before briefly stepping into her.

Kevin tried to introduce himself flirtily, before he ended up standing in her

Afterwards, she came to his party even though she was very angry, started dancing for a short time, and then glared at Justin Bieber. Later she sat at the bar with Emma Frost who apparently wished to declare war on fast-food.

Kevin Sauce
Kevin briefly flirted with her and later invited her to his party. She did not seem happy about the invitation, however.

Nick Fury
As Nick Fury is the director of S.H.I.E.L.D., Natalia works for him.

Emma Frost
It seems that Emma wanted to hire her for a war in episode 2, but she declined.

Trivia
-Captain Sauce initially tried for Kevin to get together with Natalia before he met Emma.