What if they were not only twins, what if they were triplets? Now, that could get quite out of hand but what if it had happened?
The third and youngest of the Maximoff twins was a young male, he was quite shy, he had hair like his brother, a frosty white colour, but he had the general visage of the other. His name was a little horrid to say but it was his name. Lexesin - It sounds harsh and unfortunate but he got the nickname Lex from it.
He was presumed dead by the authorities and as the now twins had been informed by their captures that he was dead, they were evidentally been told a lie. Lex was well and truly alive yet suffering from the experiments that they conducted on him, coming close to death multiple times. He had disappeared in the blip but now he was back, he was back and outside of the Avengers new building. He had heard his sister lived here.