Dr. Steiner

Dr. Steiner was the head scientist at the Advanced Biological Research Lab at the Black Mesa Research Facility. He was involved in the study and experimentation of alien species harvested from the Xen dimension, although worked on a side project cloning scientists to save on money at the facility.

Black Mesa
Steiner was employed at the Black Mesa Research Facility at the Advanced Biological Research Lab, in which he oversaw the study and experimentation on alien species taken from the Xen Borderworld. He later began working on his own side project, which involved the cloning of scientists at the facility in order to create free labour and save on the costs of hiring anyone else at the facility. Steiner also began to commit unethical experiments such as splicing humans with Xenian creatures, although the reasoning behind his creations is unclear. Despite The Administrator being aware of Steiner's activities, he allowed him to continue.

Shortly before the Black Mesa Incident Steiner was visited by The G-Man, who went to see Steiner's clone scientists. Steiner and G-Man killed the clone scientists using an electric pulse, which Steiner did to cover up his crimes. Steiner quit and departed the Black Mesa Research Facility, just before the resonance cascade occurred which led to the Black Mesa Incident.

Post-Black Mesa
Years later Steiner was employed by the Cigarette Fiend and led experiments on humans at the Nova Prospekt prison. He trapped Walter Bennett, Freddy Burbank and several other civilians in a room where he sent an infected alien to hunt them down. Although several of the people were killed by the creature, Walter and Freddy managed to kill the alien and escape the facility.