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Answer by maurice
Art director James Robbins developed the design of the Ori and the Priors from scratch. At the beginning he knew a basic description of them and their powers, and that they would carry a staff weapon.
The art department first looked at Japanese and Samurai from a costuming point of view. Inspired by remote jungle tribes for the mystical aspects, Robbins came up with the idea of scarification for the Priors and the Doci.
The Priors have scarifications on the chin and the cheek, while the Doci also have them on their forehead. Scarification would therefore be a symbol of high establishment. Originally, it was also considered to have scarification on the hands, and to have the Priors have finger extensions, but this became too impracticable.
When the Prime Jaffa Gerak became a Prior in “The Fourth Horseman”, his golden Jaffa tattoo on his forehead was replaced with a Prior scarification, and his makeup was made to look like the gold had melted and become part of his Prior scarification.

Each Prior was given his own unique symbol, which he would wear on his wardrobe and also on his staff weapon. The art department built each staff to have a little orb encased in natural wood, and the orbs start to glow when the actor pushes a little button on the handle.

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