Tse is never seen to travel; it only appears, usually in strange places and in bizarre, often macabre poses. In all other ways it looks humanoid, but where its clothes suggest a head there is only darkness. When it speaks, it is with no visible mouth, and with a voice so impossibly low it is more felt than heard.
It is uncertain why Tse has become associated with death, as its appearances seem to have no correlation to the deaths of those to who it appears. Those who encounter it report feelings of intense emptiness, loneliness, insignificance or timelessness. Even the stoutest of souls leaves such encounters drained, shaken, ill-at-ease, even slightly mad.
And yet some who meet with Tse have had deep, stimulating conversations, learning much and feeling the wiser for having made the effort. Seldom will it reveal the future or recommend any particular path, but it has experienced and seen much, and may offer significant insights. But in most cases Tse simply observes, entirely unperturbed by any aggression or threat. Those who have attempted assault wake up some time later, never quite whole again.