Aliens use to live on their world before it got blown up by a meteor.. they managed to escape but have now came to planet earth..

Once here on earth where humans lived they started to mutate into beings some small and some big they mostly live in the forest or come to villages some aliens have adapted to humans, and managed to look human-ish but other species have turned into a more deadly species.. like big spider aliens or snakes or small dogs or animals like but a mix of themselves the animal they are and a little humanoid. Some aliens are royalty but they normally show it by a marking..