Slan Quince was born in The United States of America in 1787, Slan Quince was the only child of a blacksmith, from whom he learned his handicraft. After his ship was sunk by the British during the War of 1812, he died and was reborn as an Immortal. He learned The Rules of The Game from The Immortal, Patrick Stanze, living the first half of his life as a blacksmith, like his father. Later, he began to hunt Immortals, even making his own customized sword with a projectile hidden in the handle. Because he took pleasure in hunting not only other Immortals, but also their close friends, he began to be called "Slan the Cat" by other Immortals. During sword fights, Slan carried a metallic mask, in order to protect his face, which, according to his opinion, was his most valuable property.
Encounter with the MacLeodsEditIn 1992, Slan was in Seacouver where he sought out Duncan MacLeod. One night, he broke into Duncan’s antique store seeking a fight with Duncan, but to his surprise, Connor Macleod was there, as well, looking for Slan. As Connor advanced on Quince, police sirens began to wail nearby, prompting Quince to break off the fight. Promising to meet The MacLeods again, Quince leaped through the front window, escaping into the street. The next day, Quince parked outside the antique store, observing Tessa's movements. Connor, however, appeard, making his presence known to the other Immortal, who quickly drove off, almost knocking down some people.
Later, Slan managed to overpower Tessa and tie her up. Duncan arrived and saw Tessa, tied to a chair and helpless, Slan demanded that Duncan drop his sword, pressing an electric saw to the side of Tessa's head. In response, Duncan slashed a nearby electrical cord, cutting power to Slan's tool. A brief fight ensued, until Slan batted Duncan away and grabbed Tessa again, using her as a shield. He taunted Duncan: "Be a good boy, and I might just let her live." He lunged at Duncan again, but broke off and ran away, leaving MacLeod to see to his terrified lover.Days later Slan called Duncan but got Tessa instead and told her to tell MacLeod to meet him at Soldiers' Bridge. He also promised to come for Tessa should Duncan lose or not show. Arriving at the bridge, Connor approached Quince, and challenged him. Quince accepted, donning his trademark mask, and the fight was on. As Duncan arrived, Quince unleashed a sneak attack, firing a dagger from the hilt of his sword into Connor's heart. The elder Highlander was able to escape beheading, however, by diving into the river before he expired.
Duncan advanced on Quince and Slan then tried to kill Duncan by charging at him, only for Duncan to slash Quince across the stomach, forcing him to his knees, and then beheaded him in a single swift stroke and received his quickening.
Slan was devious and methodical, stalking his opponents for days or weeks before challenging them. He would sometimes take his prey's loved ones hostage, and use them as leverage in his fights. He respected the Rules, however.
Fighting StyleEditSlan used his size (6'8") and strength to his advantage, overpowering and wearing down his opponents before taking the kill. He was devious enough, however, to employ sneak attacks when he felt the situation called for it. His weapon of choice was a customized two-handed broadsword with a specialized gun barrel built into the pommel. With it, he could fire a specialized dagger at his opponent.
- Slan was the first Immortal to be beheaded in the series.
- Unlike the movies, his beheading couldn't been shown to the television audience. Duncan simply slashed with his sword, you see Slan's headless torso while lightning comes out of his neck. Then the camera zoomed in on Slan's supposed to be beheaded corpse. From all episodes this was the most specific beheading.
- Slan was born 1787 and died during the war in 1813, this means that he was 26 years old when he became Immortal. Richard Moll, who portrayed Slan, was 49 when he took the role.
- For some reason, Connor seemed to know Slan very well. Slan didn't know Connor. Many fans have inferred that Quince was send by Jacob Kell, or at least brought on Duncan's trail by him. This however has never been confirmed by the producers or director.
- Slan Quince also appeared in an rather obscure German Highlander novel called "Highlander – Die Rückkehr des Unsterblichen" written by Martin Eisele. Fragments from the episode The Gathering are used as flashbacks.