Dr. Alistair Kreig was the lead scientist of SynTechnics in the WB Television series Smallville.
He served as the secondary antagonist in the Season Five episode "Cyborg".
He was portrayed by Mackenzie Gray, who also played LX-13 in the same series, Jax-Ur in the DC Extended Universe, voiced Obadiah Stane in Iron Man: Armored Adventures and Fangtom in LEGO Ninjago: Masters of Spinjitzu.
Alistair was fired from MIT and Stanford for conducting ethically-challenging research and frequently clashed with supervisors. He was later hired by Lex Luthor due to his head-strong personality and his vast knowledge of cybernetics.
Dr. Kreig was head of a project that dealt with near-dead automobile accident victims, but used them as test subjects by attempting to outfit them with bionic parts.
He supervised the experiments on the results. His first successful subject was Victor Stone but was held captive, and experimented on. Victor managed to escape the facility with help from Dr. Hong and went to look for his girlfriend.
Knowing of Victor's girlfriend, Dr. Kreig and Lex set a trap for him at Katherine Goodwin's house. When Victor arrived he found Kreig and more agents there waiting for him. They force him to go with him or they will harm Katherine and he agreed.
When he exits, it was revealed that Lex set him up, knowing he would show up. They took him back to the SynTechnics lab where Lex informed Victor of SynTechnics' plans to insert a chip into his brain that would strip him of all human emotions, essentially turning him into a robot for all intents and purposes.
Just when Dr. Krieg was about to drill into Victor's head, Clark broke into the lab and rescued him.