Dr. Bernard Chisholm was a deceased medical doctor who was brought back to life by the Kandorians in the CW TV series Smallville.
He appeared as the main antagonist in the Season 9 episode "Conspiracy".
Dr. Chisholm was an attending doctor at Metropolis General Hospital. When he caught Kandorians stealing corpses from the morgue, Bernard died of a heart attack. According to him, he experienced the afterlife and was at peace but was brought back to life by experiments of the Kandorians.
Chisholm's skull was cut and pierced with Kryptonite needles that he hid under a hat. Determined to prove aliens were among them, Chisholm had made several attempts to contact Lois Lane, but his mail had been contained in a Daily Planet file box, filled with postings believed to be hoaxes.
Dr. Chisholm had managed to kidnap two Kandorians and kept them frozen in a secret laboratory. Chisholm then went after Vala at the bookstore. She locked the door and closes the blinds, but when she turned around, she saw a man wearing a gas mask. She screamed in terror and frantically but fruitlessly attempts to leave, but Bernard grabbed her and knocked her out with sleeping gas.
Vala was imprisoned by her captor, who has treated her and their fellow Kandorians as guinea pigs. He knew she was an alien, even though she vehemently denies it. He stated he is using his captives to get proof that they are aliens and expose them to the world so they would be hunted and eradicated. Bernard killed one of the Kandorians and performed an autopsy for his experiment.
Bernard caught up with Lois at a restaurant in Metropolis where he tells her he detained several Kandorians in a safe location outside of Metropolis. Lois didn't buy into his story but feigns interest. She tells him she was going to call her editor to inform him of the scoop but she really planned on calling the police. Bernard saw through her lie and forcefully took her back to his laboratory. Chisholm reveals to Lois that he has ample proof about his findings of the Kandorians, and shares with her a blood specimen.
He handcuffs her to a chair with a computer and reveals an imprisoned Vala to her. Lois is horrified to see Vala in her position and orders Chisholm to release her but Bernard insists Vala is an alien. Chisholm reveals to Lois that he has ample proof about his findings of the Kandorians, and shares with her a blood specimen. He tells her that with her being a legitimate source, people will buy into the discovery. He removes his hat and shows Lois the horrific scars on his head - remnants from the Kandorian experiments.
They implanted kryptonite fragments into his brain, disfiguring the skin on his skull while doing so, leaving him with a thought process operating on such a high level that he could not find any kind of peace. Lois states that if Vala had saved his life he should be thanking her, not harming her. Bernard counters that it is up to him and Lois to stop the invasion and save mankind.
Chisholm forced Lois to type his story while also trying to escape. She heard a noise and thinks it Chisholm but it's revealed to be Zod who informs her he's an undercover FBI agent who has been watching Chisholm for a while. Zod frees Lois from the manacles and inquires where Chisholm was keeping his prisoners. Zod tried to free Vala when Bernard returned, pulls out his gun and aims it at Zod, shooting him directly on the side of his abdomen just as Zod attempts to walk towards him.
Gunned down, Zod lies in a pool of his own blood. Chisholm turns his gun on Lois, demanding that she finish writing the story. Chisholm tries to cut open Zod when Clark bursts in and shoves him across the room. Chisholm got back up and tried to attack Clark with a saw, but accidentally hit some electrical wires overhead, killing himself.