My name is Isa. Isa Romanoff. I am an Agent a government force Called S.H.I.E.L.D. No one but Director Fury, my sister Tash, her partner Barton, Dr. Banner and Mr. Stark know of my existence. Right know, I and currently residing in the Baxter Building with the Fantastic Four collecting information for Fury.

But before I get to that, you may have heard of my cover as Bella Swan. You know, the weak minded and vulnerable little girl who mistakenly fell in love with a controlling bastard named Edward Cullen. Why was falling for Cullen a bad thing? He is controlling, possessive, 100 year prude. He controlled everything about me. The clothing I wore, the food I ate, who I hang out with. Basically every little thing I do.

After Edward left I was pissed. He took my common sense from me. He made me weak. He made me vulnerable. He made me into everything I did not wish to be, the complete opposite of my sister.

But now, that I am free of Edward Cullen, I am the complete opposite of what he tried to make me. Someone who is as or possibly even deadlier then her sister. My sister is Natasha Romanoff. One of S.H.I.E.L.D's most lethal assassins. She specializes in hand to hand combat and firearms. Did I mention that she is a master spy?

But me, I am said to better then my sister and her partner Clint Barton. Which is saying something because she is known as Black-widow, him, well he is known as Hawk-eye. For his never failing aim with his Bow and Arrow.

My weapons of choice however is knives and any weapon that I can coat in a poison of choice. My signature poison is Viper venom. Which would be the cause of my code name I guess you could say. "The Viper" is what I am known as. Even though I use deadlier poisons then Viper venom. My deadliest poison is a concoction that Dr. Banner I created out of the Sydney Spider Venom, venom from the Six-eyed Sand Spider, and venom from the Brazilian Wandering Spider. I also use the venom from the Belcher's Sea Snake. But, I am not stupid, Bruce and I also created an anti-toxin for the poison should I ever need it. But, my guess, is that someone in S.H.I.E.L.D will make the stupid mistake of touching my weapons and wounding themselves first.

Well, I guess I explained who I am. But, even away from the Cullen's and back to working with my sister, I still do not feel at peace with my self. As my sister would say, I have red in my ledger and I would like to wipe it out. But, first I have to figure out how to do that.

Okay folks, this is just and intro. As you can see, I decided to add in the Fan-4 to my story.

Isa is still unknown to the world, like her sister Nat, she is a pro at going under cover.

But, If anyone has an ideas they would like to share on how the story should go, Review or PM me.

Reviews are always welcome. Let me know what you think.

Frankki.