Spaz is a god of charity, born from the concept upon the creation of the world they inhabit. Spaz establishes charity and compassion by reaching out into the minds and dreams of people to inspire cooperation with their neighbors and countrymen. It is Spaz's duty to both eliminate corruption in general and follow in Rez's wake and ensure that the prosperity he brings itself becomes a productive force in society.
Rez is a god of commerce, born from the concept upon the creation of the world they inhabit. Rez supports the growth of industry and the spread of commerce by inspiring industrialists, designers, inventors, traders, and administrators and honing their minds to great levels of efficiency. Rez's duty is to the growth of wealth and as such, Rez spends the greatest amount of time venturing to places of poverty and deprivation to elevate societies.
The two brothers work in conjunction, juxtaposed but inexorably linked together in mutual reliance and counterbalance.
Ambition must be tempered by generocity and compassion else mammon greed and corruption will lead prosperity to only cause ruin. It is because of Spaz and Rez that Whipvine has mostly recovered and survived its apocalypse that threatened to destroy it and how nations are able to maintain the strength to resist the existential threat presented by insectoids, mechanoids, and offworld threats.
Rez is their counterpart, the two share a very close bond with one another with their duties. While Rez brings commerce and creates prosperity, it falls to Spaz to ensure it reaches the right hands and to staunch the spread of mammon greed so that the benefits of prosperity are felt.