The Sicarii

The relationship between Tribes of True Immortals and the Established Orders of Adepts is pretty cut and dry, one naturally leads to the other. In the majority of cases, the Adept Order leads its members to becoming one of the True Immortals. However with the Sicarii it appears that natural order gets turned around. 
The Sicarii are an ancient Tribe whose history is veiled in secrecy and half-truths. Their Patriarch is unknown except to members of the Tribe and their secret followers. What's more, not only do the Sicarii have a strong relationship with the Order of Assassins, it appears that historically the Sicarri were responsible for the creation of the Assassin Order?...
Patriarch: Unknown.
Signature Power: Master Stealth and Teleportation Powers. 
== Facts: ==
-The Order of Assassins historically looks to the Sicarii for their founding. Before the Sicarri, there were no human Assassins on earth. This close relationship between a True Immortal Tribe and an Adept Order has benefited both parties, the Assassins are often led and trained by masters of the silent kill who have lived for centuries, and the Sicarii enjoy the help and networking of a global network of allies with a similar nature. 
-Sicarii form tight-knit Cells, often secluded away in remote locations (preferably mountainous ones) where the Elder among them leads as both teacher and general. 
-These Sicarii Cells often recruit mortal followers as assistants and disciples, teaching them the ways of their Patriarch. It is from these highly selected individuals that new Sicarii are born from. 
-The Sicarii have the ability to teleport like Travelers, but they also possess many of the Stealth-based powers like noise cancellation and cloak of shadows. This makes them doubly dangerous when facing them in combat. 
-Sicarii do not like the Orders of Destroyers and Kings, who historically are associated with the Roman Empire. The same empire that defeated them in the first century AD and burned the Temple in Jerusalem to the ground. 
-Sicarii have a close relationship with the Order of Assassins, and can expect help from them. It also works in reverse, and members of the Tribe are expected to lend support for the Assassin Order when the opportunity arises.
-Speculation has led to a connection being established between the mysterious Patriarch of the Sicarii and the spies sent into the Land of Canaan by Joshua in the Book of Exodus. If that were true, than the Sicarii Tribe is even older than previously thought.
== References: ==
-https://en.wikipedia.org/wiki/Sicarii