House Telvanni is a reclusive faction of sorcerer-nobles who govern from the tops of enormous living mushroom towers grown from magical spores. They have little interest in the outside world and less in political alliance. Each master operates as a sovereign unto themselves, connected to the House by tradition and mutual contempt for other factions rather than any genuine unity.

Hlaalu is the most Imperially aligned of the Great Houses, having cultivated close ties with the Empire since their arrival in Morrowind. They dominate the western half of Vvardenfell, operating from Balmora and the great canton of Vivec. Their power is mercantile and political, built on a network of bribes, informants, and trade agreements with mainland merchants.

House Redoran governs from Ald'ruhn, a city built beneath the shell of a dead Emperor Crab on the edge of the Ashlands. Their nobles are warrior-aristocrats who maintain the Ghostfence patrols and consider their proximity to Red Mountain not a curse but a sacred duty. Redoran honor is the kind that bleeds quietly rather than complains.

Once the most powerful of all Great Houses, Indoril's influence has declined since the Empire's arrival made direct theocratic governance untenable. They remain wealthy and culturally dominant through their inseparable connection to the Tribunal Temple, their vast network of clergy, and the feared Ordinators—their golden-masked warrior-monks who enforce Temple law with exceptional violence.