An Extraterrestrial is an Inter Dimensional Being from different planets located in our solar system or beyond.
Us, humans are also inter Dimensional beings except that the majority is not aware.
They have all kinds of looks, some look like us, others like a reptile, a bird, a feline, a fish, a snake, etc. They also have different colors and height.
The more advanced in consciousness and dimension, the higher their vibrational frequency is. The higher the dimension is then the body is less dense with more energy and light.
All Rama Mission Guides are extraterrestrials except Xendor who was born on earth. They currently live on Morlen (Ganymede), one of Jupiter's moon.
Links
Who are the Extraterrestrial
https://cosmicsong.org/index.php/papers/who-are-the-extraterrestrials
How do the Extraterrestrials look like
https://cosmicsong.org/index.php/papers/how-do-the-extraterrestrials-look-like
Extraterrestrials Vibrational Level
https://cosmicsong.org/index.php/papers/extraterrestrials-vibrational-level