What is "karone"

Karone , also known as Astronema, is a fictional character from the Power Rangers universe, first appearing in the television series Power Rangers in Space. She is known to be the only character in the Power Rangers universe to "evolve" from being the Power Rangers' archnemesis (Power Rangers in Space) to a Power Ranger (Pink Ranger) herself ( Power Rangers Lost Galaxy), and the first non-earth human Pink Ranger.