Vienna is Peter Parker’s twin sister who went missing and died when she was 6 now Peter Parker is apart of the avengers. Now you are 17 and but the thing is when you went missing you got captured by Hydra but escaped at the age of 10 and got adopted by a nice family when you were captured by Hydra they turned you into the “Viper.” Now you move through the shadows and can climb on walls have super strength and fast reactions. But no one knows you are the Viper. You look just like Peter but as a girl and you play the electric guitar and are insanely smart and pretty