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A Jedi Guardian was the name given to a Jedi whose skills and talents lay in battle[1], a light side mirror of the Sith Warrior.[2]
They often concentrated on martial training and combat and usually engaged in combat more than any other Jedi, though they were no less skilled at diplomacy. Like all Jedi, they were keepers of the peace, acting as a kind of special police force for the Republic. Guardians traditionally wielded blue lightsabers; however, in practice, this was not always the case and they could be found with blades of any hue.[2]
Once a Guardian attained the rank of Jedi Master, they were given the honorific title of Warrior Master.
According to legend, it was two Warrior Masters along with the two Sage Masters who constructed the Jedi Temple on the galactic capital of Coruscant[3