House Tarkanan is a pseudo-dragonmarked house based in Sharn consisting mostly of bearers of aberrant dragonmarks. The House takes its name from Lord Halas Tarkanan who, along with the Lady of the Plague, raised up those with aberrant dragonmarks to challenge the dragonmarked houses during the War of the Mark. Tarkanan nonetheless has a reputation for assassination, thievery and other unlawful deeds.
House Tarkanan's members bear special dragonmarks called aberrant dragonmarks and thus their abilities vary greatly. Pushed to the point of extinction, aberrant marks were rare and relatively weak, but over the last decade aberrant marks have been returning in greater numbers and some marks wield remarkable power. In defiance of the Twelve, House Tarkanan was formed by Thora Tavin, now Thora Tarkanan in 990 YK. House Tarkanan's objective is to search for those who have aberrant marks, recruit them and train them to use their powers.