The Übermensch is a concept in the philosophy of Friedrich Nietzsche. It is German for "Overman, Superman, Superhuman, Hyperman, Hyperhuman"
As with Nietzsche other works such a nihilism, it is predicated on the rejection of moral authorities, instead describing how man himself must solve the complex moral challenges presented.
The Optimal Persona is Nietzsche's Ubermensch, the higher being existing within us as potential waiting to be actualized.
Whilst the term is still popular with transhumanists, it has been criticised for associations with the rejection of democracy, the historical use by the Nazi regime and the divisive potential the idea holds. Indeed, the term is still in use by white supremacists.