The so-called Realm Benefit Party was the political expression of the Human Purity philosophy, led by Admirable Silverstones, Countygold of Upper Hills. It was banned after the Unification War because of its treasonous activities.

The Reversionist Party consists of those members of the RBP who managed to escape conviction for treason.

The enforcers of the RBP were the Special Security Group, large men who wore dark-grey coats down to their shins and (in the period before open war) carried long wooden staves. Dark grey was the colour of RBP uniforms (though many troops wore only brassards).

The RBP flag was bright red, with a white circle to symbolise purity.