Grauu'Vark is the leader of the Callae and a pouncing warrior with armor.
Due to his royalty, his birthplace city previously named Orcae is renamed to Grauu'Vark in his honor. Reasons for this is unknown, only that the city of his birth is very efficient for making spice while maintaining happiness in the colony with a music shop or two.
Grauu'Vark can be called a vicious warrior, mainly because he constantly conquers home worlds to loot their bountiful spice colonies. He usually captures the home worlds, but if he wants the home world to stay intact, he'll use Fanatical Frenzy and later deal with any empires who declare war.
He is also called the religious diplomat, mainly because he also makes many alliances, and one of his best allies is a diplomat. Currently these diplomats have an empire worthy of his respect even, though he is not able to respect it as it is not where he is, conquering another planet and/or making an alliance.
Grauu'Vark thinks trade routes are only for spice and money, as he dislikes purchasing systems. He just says "Conquering is like trade routes, but it's free and much faster." The only reason he really makes trade routes is for spice.
He is a good terraforming captain aswell, creating the moon of Yaan-Gor into a lush colony giving constant yellow spice. He has conquered several purple spice colonies, and hopes to turn them into T-3 colonies for much purple spice to sell so he could get his new weapons.
Overall, Grauu'Vark is known as an assassin, coming in unnoticed until you find him bombing your city to death.