Each of the Twelve Crusaders was gifted a weapon infused with the power of a certain member of the Dragon Tribe, and only the Crusader (or one who has inherited their power) can wield them. Also, each Crusader has a holy bloodline named after them, except Heim and Ced, whose holy blood lines are called Naga and Forseti respectively in Genealogy of the Holy War. Much like the descendants of the First Exalt and the royal families of Rigel and Zofia, individuals who bear major blood from one of the Twelve Crusaders can have a brand somewhere on their body. Those with major blood can be possessed and even resurrected by the spirit of the dragon with whom they share blood; this possession seems to cause drastic personality changes and/or amnesia in the affected person.
After the fall of the Loptyrian Empire in 648, the Twelve Crusaders founded twelve nations across Jugdral. In the next year, Chalphy, Dozel, Jungby, Velthomer, Friege, and Edda consolidated into duchies under the leadership of Belhalla, creating the Kingdom of Grannvale. Among the nations of Jugdral, only Verdane and Miletos were not founded by Crusaders.
The Twelve Crusaders, their holy weapon, the nation they founded, and the dragon with whom they blood-bonded are listed in the table below:
|Crusader||Holy Weapon||Nation Founded||Blood-Bond|
|Heim||Book of Naga||Belhalla → Grannvale||Naga|
|Njörun||Gáe Bolg||Manster District||?|
|Bragi||Valkyrie Staff||Edda (→Grannvale)||?|
- Galle and his descendants share near identical powers with the Crusaders and their descendants. Galle was capable of using the tome Loptous after having blood-bonded with the earth dragon of the same name, and he founded the Loptyrian Empire.
- In the TearRing Saga Series, the Twelve Crusaders are paralleled by the Twelve Heroes who helped save Leda from being taken over by the Theocracy of Gerxel.
- In one of the developer interviews for Genealogy of the Holy War, Lewyn's possession by Forseti is compared to a geis, a binding magical contract from Irish mythology that can be both a major boon or drawback.