There have always been rats in the wainscoating
of society. Those who survive not by following the system but by going their own way. As society has advanced then the rats have had to as well. In a high-tech society only the best rats can survive. Harry Harrison
chronicles the adventures of James Bolivar diGriz, one of these Stainless Steel Rats.
The series currently consists of:
The first five follow his recruitment into The Special Corps and missions for them. Harrison then goes back and the next three books tell of the Rat's origins.
During his adventures the Rat saves the world from domination by a time travelling tyrant, prevents an invasion of intelligent dinosaurs, and wins what is probably the dirtiest election anywhere ever.
There was also a board game "Return of the Stainless Steel Rat" from SPI published in issue 10 of their science fiction/fantasy gaming magazine Ares. This issue also included a short Rat story of the same name by Harrison.