One of the main fleet commanders of good guy ET forces (the ones whose craft we regularly see and document) is called Ashtar Sheran. In the past he used to have channeling contacts with many earth people, until CIA increased their anti-disclosure psyop efforts, where "Ashtar Command" was made into a MKULTRA trigger word.

One of the biggest proofs of this is the Southern Television Broadcast Interruption from 1977.

https://www.youtube.com/watch?v=6BWHVmBY0Cs