Murdoc

Murdoc, otherwise known as Dennis, is a renowned and infamous international assassin and mercenary who is MacGyver's nemesis. Originally known only in the intelligence community as Suspect 218—his CIA file name—his preferred name is revealed by the Phoenix Foundation when he tries to kill MacGyver and his fellow agents. Not much is known about Murdoc's past due to his penchant for lying. When he was a child he would bring spiders from the backyard to his bedroom and rip their legs off one by one before squishing them. He also trained and later exploded his pigeons. Murdoc’s father was abusive, and he later claimed he killed him. Murdoc was rejected by the US army so he briefly left the US to train elsewhere, where he became an assassin. He is capable of killing anyone at any time for virtually any reason; he has stated that he has amassed so much money from jobs in the past that he no longer needs any and now takes assassinations simply to avoid being bored. Predictably, he has a dark and distinctly warped sense of humor, finding the most pleasure in inflicting pain, and often acts very immature and childish even if he has guns pointed at him. Though he is supremely self-confident, Murdoc is far from arrogant as he freely acknowledges his own shortcomings and gives credit where credit is due when evaluating the skill levels of his adversaries and rarely underestimates them.