Kensington is a paranoid agoraphobic computer expert who is rescued from a Deckers' Ship, she is assigned to take down the Deckers and its leader Matt Miller who constantly believes he is superior to her, which proves to be his undoing. She and Pierce are assigned to the Deckers, which was suggested in the Deckers.die trailer. The Saints later rescued her from a barge operated by the Deckers. She had been investigating The Syndicate and planning to out them as an underground criminal organization, but the Deckers framed her to make it look like she had been selling secrets to Mossad and moonlighting as a dominatrix, her employment was terminated, and she was captured by the Deckers.

Kinzie was originally an intelligence agent for the FBI.

Kinzie Kensington also has a wide range of technical skills, she was displayed as being a computer genius capable of 'broadcasting sub-conscious into the Decker user net' in order for Playa to battle with Matt Miller. She is also somewhat of a conspiracy theorist (though in some cases her theories are actually well founded), such as the existence of the Daedalus, the threat of Matt Miller, The Syndicate, and the alien invasion. The members of the press claim her to be paranoid. Kinzie was a member of the FBI until she was dismissed for possessing what was claimed to be 'manufactured evidence'. Agent Kinzie Kensington initially appeared in the 'Power CG' trailer that debuted at E3 2011, but was not named until lead writer Steve Jaros did a developer commentary over the trailer a month later.

Saints row 4 female character creation