MOOVIANTHAN-KAYPHIK (aka "shining ones")

They come from constellation Vulpecula.

They have met with (at least) 2 USA Presidents as well as with USSR and (now) Russian leaders and some high-ranking officials. They supply limited amounts of their technology to humans in exchange for the "freedom" to conduct abductions. They do not involve other alien races in this process.

They had a big role in Siberian and Tibetan culture. They still have bases in those areas hidden in the north-face of mountains.

They have colonized over 40 planets outside our solar system... so far!