Michael Christian was born in 1952 in Des Moines, Iowa. He was a foundling raised by a farmer. He grew into a troubled young man with no ambition. Michael's first death occurred when he was drinking too much in 1975 and drove his vehicle into a milk truck. He would later meet immortal Lawrence Gasper. Michael learned everything about his immortality from Gasper, then under Gasper's tutledge, developed the ambition to become the One, the winner of the Game. On July 4, 1979, he betrayed Gasper, and took his head. The Quickening was mistaken by the townspeople as one of the biggest fireworks display they had ever seen.Michael was a strong player in the Game for his age due to a certain advantage, Rita Luce, his Watcher took a liking to him because he reminded her of her own son, who had died in a car accident. Michael and Rita developed a partnership and unhealthy love for one another. Michael became a more formidable competitor in the Game when Rita began providing him with information on other immortals, their strengths and their weaknesses. She directed him to Los Angeles, California 1994, when Michael challenged Cordelia Stanton at a time she would be alone and unarmed. In 1995, in Hong Kong, Michael met the 1200 year old immortal May-Ling Shen, someone he would normally be unable to defeat, but he took her head when she was unarmed and defenseless.
Back in Seacouver, Michael was anxious to take Duncan MacLeod's head, but Rita did not think he was ready yet, she guided him to take another immortal, Jackson Trent, whom she had heard had not touched his sword in years. This information was indirectly provided by Watchers Justin and Maureen Russell, who were the assigned Watchers on Trent. The information was casually provided during a friendly poker game with other Watchers. Rita went to Joe Dawson's tavern where she overheard him in a conversation with Richie Ryan; which provided the information that MacLeod would be at his island cabin, and he would be without his sword. She then told Michael where MacLeod was.
Michael challenged MacLeod. Weaponless, MacLeod defended himself atop a dam, MacLeod disarmed Christian, and the two immortals fell from the dam, they both scrambled for Christian's sword but MacLeod reached it first and beheaded Michael.
Christian wielded a two-handed sword, a Garcia de Paredes-Mandoble.
In addition, after being disarmed by MacLeod, Christian engaged in a fist-fight, showing a level of skill in unarmed combat.