Jedi Weapon Master/Sith Marauder-Give up 2 force abilities once you reach 300 posts and you are a Jedi Knight to be a weapon master and learn more lightsaber forms. This means you are weaker to force attacks.
Jedi Defender/Sith Assasin-Defenders have high defense physical and mentally. They are immune to most force powers but get to know only one lightsaber form. Assasins are stealthy and cannot be sensed with the force. Being an assasin means good hand to hand combat skill and immunity to most force powers but only get one lightsaber form as well.
Jedi Hunter-Droid or being who specializes in killing jedi. Some hunters were Force-sensitives themselves. Most Force-using Jedi hunters were members of Dark Side cults and groups that were traditional enemies of the Jedi, the most notorious of these being the Sith. Others were former Jedi driven to the Dark Side by unfortunate, traumatic events, and, believing their former mentors responsible, decided to pursue a homicidal grudge against the Order.Some Jedi hunters were ordinary beings with bodies heavily augmented by cybernetic enhancements that allowed them to compete with the Jedi on the physical level. The most prevalent example was the CIS military leader General Grievous.
Jedi Wacthmen-Jedi Watchman was the title given to certain Jedi who, in the days of the Old Republic, were tasked to oversee a particular system or sector. When a Force-sensitive child was discovered and picked for training by the Jedi, it was usually by that planet's Watchman. When a Watchman joined the Jedi Council, another Jedi usually relieved him of his duties to a particular system. Examples include Kai Justiss taking over Yoda's stewardship of Kashyyyk, and Tarr Seirr taking over from Ki-Adi-Mundi in the protection of Cerea. Jedi Watchmen had the ability to cloak their physical selves with the Force, granting them invisibility. As such, their role was usually that of a behind-the-scenes warrior, diplomat, and a subtle but benevolent manipulator of a given world's events. Jedi Watchmen were the eyes and ears of the Jedi Council, granting them greater flexibility in formulating the strategy of the Jedi Order. However, it must be said that a Watchman selected for his or her post was usually chosen for their own abilities to think and decide the best immediate actions in light of a given situation. The Jedi Watchman was trusted to know the will of the Jedi Council and to act accordingly.