Thief Phoenix is based on the Phoenix, as evident by its name. In mythology, the phoenix was a sacred firebird made of a large variety of colours and such. The phoenix would usually live for about a 500 life-year span, while at the end of it, creating a nest of twigs. The phoenix and its nest would burn into nothing more than fiery ashes; where in turn, a new phoenix or phoenix egg would appear. This new phoenix would then be destined to live for as long as its ancestor; thus being reborn. As is, the whole purpose of the phoenix: to be reborn and in a way, live forever; immortality.