Frieza, during his conquest of another world, finds a young girl who seems to know nothing about herself or the universe they live in, save for her name. After some thought he decides to adopt her and raise her as part of his family, both to stick it to his brother and to have a far more loyal soldier for the future. While doing that he must be wary of the surviving Saiyans that are part of his forces, all while searching for a way to secure his legacy and make him the master of the entire universe.
Twilight Sparkle will have to deal with her father's enemies, potential traitors, and anything else the universe decides to throw at them as she tries to learn more about herself and where she came from.
(Dragon Ball Z and Super/MLP Crossover)
(Part of the Demon War series, but reading the others isn't required).