After the death of his father, Rislav's older brother, Dorald Larich, became the King of Skingrad. When Dorald became king he immediately swore fealty to the Alessian Empire, which angered and shocked many of the nobles in the Colovian Estates. Rislav, who was enraged by Dorald's actions, killed his older brother and took the throne for himself during the Coup at Skingrad. After this a war broke out between the Alessian Empire and the allied kingdoms of Skingrad and Kvatch.
Though Rislav had no previous experience in warfare he managed to defeat the much larger Alessian army by use of guerilla tactics.
- There is a statue of him in the city of Skingrad, as seen in The Elder Scrolls IV: Oblivion.
- There is a monument to him in the city of Kvatch near the Kvatch Arena in The Elder Scrolls Online: Dark Brotherhood.