Darth Cognitum

Darth Cognitum, born Z'taar, was a male Herglic that became a powerful Sith Lord shortly after the Grand Sith Purge. He was one of Darth Prone's pupils. He was known for his abilities to use his brute strength empower his Force attacks. He also played an important role in the efforts to bring the Sith back from the great loss.

Lightsaber technique
Darth Cognitum's lightsaber technique was based on mostly brute strength. He was known for using Force attacks between his powerful strikes.

Force powers
Darth Cognitum was the only known force-sencitive Herglic that ever lived. But, he proved that he was a great Force user, using his natural build to increase the power and strength of his Force attacks. Almost making them four times stronger than normal. His favored force power was Force Crush, where he could completely crush the entire body structure of the enemy. He also was taught advanced stages of Black Lightning, Force Shockwave, Force Earthquake, Force Fire, and was taught the ultimate power of Dark Eruption.