Who is Martin Danzig?

A mysterious old man (Martin Danzig) sits in the park feeding pigeons, ruing the refuse of humanity encroaching on his sanctuary. A man in a crisp white suit approaches and informs him that although still needed, he is no longer wanted. Facing feelings of uselessness, Danzig begs to stay, but is rebuffed. As a final gift, Danzig gets to meet his much younger replacement and learns to accept his future – with the fate of all humanity in the balance.