Aiden Pearce (also known as "The Vigilante" and "The Fox" by citizens and the media) is the protagonist of Watch Dogs. He is a highly skilled gray hat hacker who has access to the ctOS of Chicago using a highly specialized device, the Profiler, to which Clara Lillelater adds more capabilities. Because his actions led to a family tragedy, Aiden has taken to a personal crusade against the powers that be. His obsession with security, surveillance, and control borders on the paranoid and dangerous, extending to monitoring his own family (unbeknownst to them).