The Tenqain Templars is an organisation of knights and warriors, seeking out and destroying magic wielders. Their main base of operation is unknown to all but their most trusted allies and officers. They have cells in most larger cities on Kotani, and likely around the world.
In Luciat they stay hidden, as Bendheart sees them as a paramilitary group no better than religious fanatics, and there is no room for that kind of people in Luciat.
The templars originate from the eastern shores of Kotani, most likely Narjannast. Here they walk freely and openly, seeking out witches and warlocks wherever they can find them, killing most, and torturing all they find, be they magic users or just poor victims of social injustice.
The Tenqain Templars believe magic to be the downfall of civilization, of morals, ethics and the natural way of life. They believe in no god as such, but they have what one could call patron saints, which are the founding members of the order and other members of significance that has been part of the organisation since its founding, many hundreds of years ago. Some templars, and in fact all the founding members, know how to wield magic, their repertoire is not big, and they are limited to these spells on the pain of death. The spells they wield are only useful in tracking down mages, protection against magic and of killing and capturing magic users (list to come, most likely guild spells, no particular circle).
Considering the scarcity of magic and most peoples disbelief in and/or lack of knowledge of it, has led some scholars to believe that the templars are funded and controlled by a different force all together, not looking out for the best of mankind, but rather preventing the natural progression of the natural order of Pentarus. Similarly these same speculate that the templars are not of so recent origins as most believe.