Livyaten is one of the Seven, corresponding to Invidia — Envy. A fallen angel of disputed origin, he is the most architecturally significant of the Seven: his body, in demonological tradition, contains a gateway — the Hellmouth, the opened jaw, the passage that leads not merely into darkness but into somewhere specifically other. He does not envy in the ordinary sense. He embodies the grief of another's good fortune — the specific, annihilating pain of witnessing something that should have been yours, and being unable to bear that it is not.
In Helen Marsden's analysis, Livyaten is Invidia isolating targets — the function of envy as a weapon of separation, turning a target's community against them through the amplification of resentment, status anxiety, and the specifically human tendency to find another's success intolerable. By the time a target is truly isolated, no direct intervention is required. Everyone around them has already decided, independently and for entirely human reasons, that they deserve to be alone. Livyaten's work is invisible because it looks entirely like other people making free choices.