Xenethis is very reserved in personality, though not the extent of Ulquiorra. He tends to keep quiet as a result of fear of his own rage, and the destructive consequences that followed. Examples of this come from his time as a Demented Gillian, which to him seemed like a short blur of hunger and anger, despite it lasting decades. More recently, it comes from the vivid flashbacks of his own death, which cause him to break out into a bloodrage and try to kill anything in his line of vision. As a result, he tends to keep to himself, though he is far from emotionless. For an Arrancar, he is shown to have something of a complex nature. He has no trouble killing, and when angered will go to great lengths to ensure his enemies are slaughtered.