Orbs is deliberately mangling the name — he likes doing that, and I think it's quite amusing. The correct spelling of that alleged species' name would be "Hathor". They are supposedly one of the "tribes" of the alleged Velon that Chris Thomas writes about.
Long story short, these alleged Velon have supposedly come from a remote solar system in the direction of Sagittarius, and they are — in Chris Thomas' vernacular — "semi-physical beings", for whatever that means. (Chris Thomas claims that there are only three types of beings, i.e. physical, semi-physical and non-physical.) According to his description, these Velon would be much larger than a human being, but with relatively tiny heads, as their brains are supposedly located in their chests, rather than in their skulls.
As the story goes, they were initially a reclusive society, but then they found out about Earth and embarked on a religious journey here, thereby seeking to take over Earth and enslaving humanity by traveling back in time and altering our history. But then something supposedly happened — some sort of cosmic war between them and the Pleiadeans, who were protecting us — and most of the Velon left again, except for two of their tribes, the Hathor and the Annunaki, neither of whom holds the best of intentions for humanity. But apparently they also don't care much for one another, as they are supposedly at war with each other.
The Chris Thomas material truly sits in a universe of its own. Chris Thomas claims that he was born hardwired into the Akashic Records and that he is receiving his information directly from there. Yet, most of what he says does not correspond to the findings of other people who have consulted the Akashic Records, and he also contradicts himself on a number of things.
He himself also has a way of dismissing anything that doesn't agree with his own narrative, and he appears to be afflicted with a high degree of paranoia. Among other things, he claims that the NSA broke into his house an injected him with a radioactive isotope in order to kill him, but that he has healed himself from that, and he claims that his books — I think he has written five so far — are banned on Amazon. Pedant point: if the NSA wanted him dead and they had access to his house, then they wouldn't have injected him with anything, but they would have killed him and made it look like a burglary that went wrong, plus that the NSA is a US American military organization, while Chris Thomas is a born-and-bred Welshman who still lives in Wales on this very day.
Personally, I think that Chris Thomas himself does believe in everything he says, but that what he says would be the product of his imagination, remote-viewing with highly varying degrees of hit-and-miss, as well as paranoia and wishful thinking. I know from personal experience that remote-viewing can be highly misled and/or colored by one's expectations, whereby the expectations themselves can be severely influenced by one's belief system and by deliberate attempts from others to mislead you. I've already elaborated on this experience elsewhere on the forum, so I'm not going to reiterate that story here.
There is either way no factual evidence whatsoever of the veracity of anything that Chris Thomas says — on the contrary, there is a lot that contradicts his claims — and therefore his narrative boils down to a dogmatic belief system, just like any of the major religions.
Member Herbert has been posting a lot of the Chris Thomas material here on several threads, the most recent and active of which is called "An ongoing Chris Thomas thread for those who resonate with his alternative view of reality and history ", but it has more or less been made clear between the lines that said thread is not open to any discussions regarding the validity of the material.