Think again, if you thought we were the only intelligent life in the universe. Within this universe, there are billions of galaxies, containing, billions of billions of star systems, of which each can contain several planets, of which most are able to sustain life-forms. Statistically speaking, it is impossible that we would be the only intelligent life in the Universe. And of course we aren't. Even within our local galaxy, the Milky Way, there are various extra-terrestrial civilizations. Some are physical, some are non-physical. Some even are humanoid, while others are not.
Taking into account that Earth is only 4.5 billion years old, and mankind only appeared 100.000 years ago, while the oldest part of this universe is estimated to be 14 billion years old, it is only natural that there would be civilizations that are far more advanced than we are. More than one of these civilizations have been in contact with mankind. Some even played an important part in the history of Planet Earth. The most important players in Earth's Galactic History are coming from the Pleiades, Sirius, Orion, Arcturus, Zeta Reticuli (see Zetas), from Vega and other stars in Lyra. (If you want to find out more about Earth's Galactic History and/or about Humanoid Galactic History, you will be able to find that information in this database).
As mentioned, a lot of the alien races are more evolved than we are, technologically, mentally and spiritually. Most of these races are benevolent towards mankind. Some races, however, do not have the best of intentions. They are often referred to as the 'Negative Oriented Extra-terrestrial civilizations.' Some of them even made sinister deals with Earth humans, and even with Governments. It is said, e.g., that the US Government made a secret agreement that allowed for people to be abducted in exchange for technology.
In this context, it is, therefore, equally important to know that these 'negative' alien civilizations are only a minority, and that their actions are constantly being monitored by organizations that are more positive-oriented. Two of these organizations, e.g., are the Ashtar Command and the United Federation of Planets (also known as the Association of Worlds).
Not all extra-terrestrial civilizations are physical and humanoid. Some species, such as the Arcturians, ELs, Andromedans (from the Andromeda Galaxy), or Antarians, e.g., are not physical, as we are. Other species aren't considered real 'humanoid,' such as, e.g., the Lizzies and/or Draconians. Most of the races mentioned in the database, however, are of the physical humanoid type. For some of these races you will find a description of what they physically look like.