Jem'Hadar (Star Trek: Refuge)

A genetically engineered humanoid race from the Gamma Quadrant, the Jem'Hadar are the military arm of the Dominion and one of the most powerful military forces in the galaxy. In 2374, when the borg attacked the Dominion, the Jem'Hadar fought them for three days, then when the federation came to the aide of the Dominion, they managed to save 11 Billion Jem'Hadar. When brought to their own system, they were cured of their addiction and some were given a serum so some could have a real childhood.