D&D Class Relation: Tuatha
Shamanistic beliefs, large stature, and naturally savage demeanor make Tuatha excellent Barbarians. Their culture across regions melds well with the Totem Warrior and Ancestral Guardian archetypes. Only outcasts would ever walk the path of a Zealot.
The worship of a singular deity, or even a pantheon, is taboo amongst Tuatha culture. Many would rather die than find themselves groveling at the feet of a Divine. Raiche Cairn of Los'Mozakas even hunts these traitors.
Warriors of the Wilderness are a common sight, however, their natural inclination towards magic makes Tuatha fighters less common than one might think. This is not to say that they do not make mighty warriors when this path is chosen.
The chaotic nature of Tuatha contrasts strongly with most Paladin Oaths. Only the Chall Cairn of Baj'Mozak can claim true Paladins. Nearly all of them follow the Oath of the Ancients, having bound themselves to the protection of land itself.
Their massive size makes the art of thievery almost impossible for most Tuatha. Their culture however leads them to make excellent Scouts and efficient Assassins when it is required of them.
When protecting places long forgotten it is very, very common to come across beings or objects of extreme power. The history of the Tuatha people is littered with tales of Warlocks binding with something they truly did not understand.
With no schools to learn from and no scrolls to mimic, Tuatha Wizards are a rarity. Those that do successfully travel the path of the Wizard are often drawn to the Schools of Divination or Illusion.