Legba is often represented as a phallus or as a man with a prominent phallus. Known as the youngest son of Mawu, he is the chief of all Vodun divinities; in his Diasporic portrayal, Legba is believed to be a very old man who walks on crutches. Being old he is seen as wise, but when seen as a child he is one who is rebellious. It is only through contact with Legba that it becomes possible to contact the other gods, for he is the guardian at the door of the spirits. Dan, who is Mawu's androgynous son, is represented as a rainbow serpent, and was to remain with her and act as a go-between with her other creations. As the mediator between the spirits and the living, Dan maintains balance, order, peace and communication.