Eugene Chaffee is a restaurateur and businessman and one of the primary antagonists (alongside Stewart Rogers) of This Is The Police. Opposed to the policies and personality of Mayor Roberts, he acts under the false identity of “Robespierre” to bring about Rogers’s downfall.
Events of This Is The Police
Chaffee is the true identity of the anti-Mayor Roberts campaigner Robespierre, revealing his identity to Jack after his first convalescence. Chaffee's goal is to overthrow Mayor Roberts, and create a progressive Freeburg under his leadership. It is also discovered that he is entirely responsible for the creation of the Dentist in Freeburg, masterminding the ruse for his and Jack's benefit.
In the third act of the game, as an election approaches, Jack will side with either Rogers or Chaffee. After aligning with Chaffee, Jack will order an assault squad to storm City Hall and kill Mayor Rogers in a fierce gunfight, part of Chaffee's plan to take over as Mayor. Jack will still be fired from his position, but Chaffee will reward him with "enough money to last Jack the rest of his life" - one dollar. However, regardless of Jack's allegiance, Chaffee will sabotage Jack and Lana's relationship, claiming that "it had to be done". This will have severe consequences later for both Jack and Lana.
If Jack sides with Rogers, he must storm Chaffee's restaurant and slaughterhouse complex and kill him. The result is similar, as Jack will still lose his job. However, Jack will be able to keep the money he saved for retirement.