Scarlet Witch And Quicksilver
Everyone knows that Scarlet Witch and quicksilver are the children of X-Men villain Magneto. But that was not the only twisted part of their family, Pietro and Wanda Maximoff from the Ultimate Universe had a difficult upbringing. Maybe that’s why they were attracted to each other and no one except Steve Rogers had a problem with it. When Quicksilver was rejected by his father, he sought comfort in the arms of his sister and “not in a sisterly way” either. Thankfully the relationship was not explored in the movie Avengers: Age Of Ultron.