renegade >> ˈrɛnɪɡeɪd
Definition: [noun] a person who deserts and betrays an organization, country, or set of principles.
Example: an agent who later turns out to be a renegade
Definition: [adjective] having treacherously changed allegiance.
Example: a renegade bodyguard
Definition: [verb] become a renegade.
Example: Johnson had renegaded from the Confederacy