There were four clans in total, each battling during the Clan Wars. In 3237, the leader of the Yagyu Clan was slain by the Bride of Four Houses, who took the clan as her own. Following this, Regina spread rumours to each of the clans that the other ones had joined the Iron Dominion, and used the Yagyu to randomly support the clans in various battles between them, thus convincing them this was true. Subsequently, the three remaining brides, fearing their clans would be overrun, swore allegiance to the Iron Dominion. However, due to a variety of reasons, each clan was eventually convinced to break ties to the Dominion, leaving it far less powerful.
- Yagyu Clan (formerly led by Bride of Rich Nights, currently led by the Yagyu Lord) — bat clan
- Shinobi Clan (led by Bride of Constant Vigil) — chameleon clan
- Raiju Clan (led by Bride of Conquering Storm) — lynx clan
- Gossamer Clan (led by Bride of the Endless Reach) - spider clan
- The banner of each Clan symbolizes the name of each Bride that leads them.
- It was writer Ian Flynn who explained each clan is limited to one race of Mobian.