Lost Twins (Avengers)

Andy and Anna were twins with some magical powers that they didn't knew from where, when, or most importantly from whom they were, from who they got the inheritance. They had lived a terrible past of abandonment and loneliness, they had to get used to being them together in all, in good and bad times. They were inseparable and in the meantime if that happened their power would become stronger and bigger than that of any, even the person who separated them from their mother when they were born, one of the most terrible persons in the whole galaxy, yeah...Thanos.
Since they were small and abandoned in small boxes outside of a orphanage near Queens place, they needed something to do while they were bored, and there is nothing better than helping humanity.
But that's not the actual point, they never thought that one day like any other some people would have changed their lives for a good reason, to discover, to fight and even to find what love means.
They will fight for the true and for their love ones, especially when it refers to... Peter and Tom Parker.