Coats was a medical Kryptonian soldier and member of Zod's army in the WB/CW Television series Smallville. He served as the main antagonist in the Season 9 episode "Rabid".
Like other Kandorians before him, Coats donated a blood sample into an Orb created by Jor-El who had been tasked by the Ruling Council to preserve the Kryptonian race by fulfilling Rao's prophecy. Coats later died during the explosion of Kandor.
Coats was created when the Orb opened releasing clones of the individuals whose DNA has been stored inside of it. Coats later met with the Kandorian Army at the Luthor Mansion who placed Zod and Tess Mercer on trial. When they began questioning Zod and Tess, Zod used his natural leadership skills to gain their trust and they left their temporary base, the Luthor Mansion leaving no evidence and with Tess hunting them down.
Coats began to blend into Earth society, acquiring a job at Metropolis General Hospital where he began researching his suspicions that Jor-El came with them to Earth, after seeing the House of El symbol all over Metropolis. In order to learn more and draw the hero out, Coats developed an airborne virus which turned humans into ravenous zombies that was spread over Metropolis. The virus was designed to induce sleep, during which it germinates and takes over the infected person. Tess became infected and was taken to Metropolis General Hospital where Clark Kent and Lois Lane paid a visit. They overheard Dr. Coats talking about Tess having a virus and go into her room to investigate. The virus quickly spread from the hospital to the city and in just a few hours the streets of Metropolis were deserted.