By definition all higher dimensional beings are alien, by definition all other life outside of earth is alien. People get it mixed yes. There are higher dimensions of existence where there are sentient beings who are the creation of the one eternal creator. These beings themselves have amazing skills and vast wisdom and knowledge. Some are of the dark inclinations and some are more inclined to the path of light. In the Bible there are accounts of these “Angels” using machinery or advanced technology. Even God himself has what appear to be robotic beings protecting his throne called cherubs. The cherubs have no free will, only a programmed task. Protecting the throne room.