In the Power Rangers universe, particularly in "Power Rangers in Space," one of the most iconic villains is Astronema, who is known for her desire to conquer Earth and the universe. Another notable threat is the villain Dark Specter, who seeks to dominate all dimensions.
If I had to choose one villain from this series who would be the go-to for threatening Earth, it would definitely be Dark Specter. His immense power and leadership of the villains made him a formidable foe for the Power Rangers. Who would you pick?