What are their powers/abilities? Concussion Beams: The user has the ability to fire off concussive energy from his body. He most often uses his hands but has been able to fire it from his feet and eyes as well. The blasts can range from forceful large to precise, cutting, small beams.
Do they have any notable weaknesses? He is bound by mortality.
What is their personality like? Concussion is a man who enjoys nothing more than to see others in pain. Pain is the answer to all questions and problems in his mind. That doesn't mean he can't be smart, but he does leave most of the planning to others.
What is their backstory? Concussion has been around for it all. The rise of the Dominion, the attack on Providence, the Battle of New York, and now the war. Not much else is known about him. Whatever secrets he has, he guards them well. He lives to make the Dominion succeed.
Is there anything else we need to know? -Concussion is one of the founders of the Dominion.