Hackett is a British man who was trained by the British Army. He worked as security for Oliver Queen
, taking him on thrilling trips, such as trekking through the Arctic. He gets Ollie to invest 14 million dollars on "a luxury resort in Fiji", which, unbeknown to Ollie, is really a opium field and refinery, on an unnamed island. But Oliver, after embarrassing himself at a charity auction, insists on going with Hackett on his yacht to "Fiji". While on the yacht he attacks Ollie, but can't bring himself to shoot him, so just throws him overboard. After discovering that Ollie washed up on the island Hackett tries to kill Ollie several times, but always fails. He is eventually killed by China White
, shot through the heart.