9. Leta Lestrange
Bellatrix Lestrange was one of the most violent and evil characters in the Harry Potter franchise, and as we learned in The Cursed Child, she was even the mother of Voldemort’s daughter! However, we learn in this movie that Newt was romantically involved with a ancestor of the villain’s called Leta. It’s clear that the Magizoologist had feelings for her and that they were close in school, but their relationship beyond that isn’t clear. It is however hinted that she may have taken a dark path and ended up following Grindelwald, so that could explain why the family ultimately ended embarking on such a dark and twisted path.