Hourman Virus

The "Hourman Virus" was a nanotechnological virus which was introduced into Hourman's system thanks to the machinations of the 853rd century's Vandal Savage and Solaris. Once Hourman arrived in the present with the Justice Legion A to gather the Justice League of America to participate in celebrations of the Prime Superman's return, the virus activated, overriding Hourman's immune systems and spreading to infect the world.

The virus attacked the brains of its victims, making them irrational and hostile; and the only way to banish it was to create the evil Solaris for the first time in the 20th century. This the Justice Legion A and remaining JLA members reluctantly did, causing the virus to leave its hosts and form the mind of the original Solaris. The virus' symptoms manifested in physical form as small bits of circuitry on its victims' flesh.