In Warhammer 40k, the Tau Empire is lead by Ethereals.

The 5th Tau codex states ‘it is speculated that they (ethereals) exert some kind of pheromone based or latent psychic control over the other castes... the adeptus mechanicus and adeptus arbites are very interested in this aspect of tau culture.’

Has this control been elaborated on in any way in official canon? Any canon source such as codex, rules, white dwarf etc is acceptable.

  • 2
    There are tons of speculations but to my best knowledge, there is no definite answer. – Yasskier Mar 20 at 2:07
  • That's classic 40k lore: they keep it blurry and mysterious so that players are free to imagine what they want. Is there something fishy about the Greater Good? Hopefully, if GW comes up with a good story, we'll learn more. We have been knowing nothing about the Legion of the Damned except "they appear in time of despair" for a long time for decades. – Taladris Mar 23 at 11:12

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