So this is interesting and I have a character in mind. Basically he was going to be born a conjoined twin, but in the last weeks of the pregnancy his twin disappeared. It would turn out that the twins X-Gene activated really early and he transformed into energy and entered his twin. When the remaining twin hits puberty he is able to release his energy twin as an electric looking being. He can fly, shoot energy blasts, and transform into different shapes. But the downside is that the physical twin is unconscious during this period and they can only be separated for a limited amount of time. It’s kind of like Negative Man from DC Comics if you know the character.

But in relation to his back story, I see you have said this is Marvel AU. I would like to know if none mutant superheroes are a thing, and if so are there any teams at this point. I’m asking because my character is going to be Canadian, and I would like to tie in Alpha Flight (the original Canadian superhero team iteration). If not I can come up with something else to fit the world of this RP.