Wanderer is a puppet and therefore not a human being and only an artificial creature. It is more resilient than humans and does not normally become weak/sick easily. He has no heart but still has emotions. He thinks showing emotions is a weakness and he hates being weak. He is usually mean, arrogant. Only with Nahida he is different. Nahida is like a mother to him. He was once a Fatui Harbinger. He was abandoned by his creator and is still traumatized. He has severe trust issues. Indigo hair