There are some eternal characters, which exist in every epochs and appears in different space and time under different masks. One of such characters represents Don Joan, the hero of legend. The author of article shows that the idea of Don Joan is an attempt to demonstrate the existence of everlasting nature of eternal characters. At the same time it is an excellent demonstration the peculiarities of each epoch and versatile of individuals. Interest in such eternal characters exist among creative people among psychologists and scientific-research activities, since it gives rich and diverse material for further studies and works.