Morgan Edge (Rutger Hauer, Patrick Bergin)
A Metropolis crime boss and childhood friend of Lionel Luthor, Morgan Edge is an antagonist featured in the first half of Season 3, attempting to force Clark (whom he knows as "Kal") to honor a deal he made while under the influence of Red Kryptonite. He and Lionel later try to uncover Clark's secret; in the aftermath, Edge is killed when he drives his car into Clark's invulnerable body. Is revealed to have helped Lionel murder his parents when they were both young.
- Accidental Public Confession: Is taped confessing to the murder of Lionel's parents.
- Alternate Self: Has one on Earth-Prime.
- Big Bad Duumvirate: Tries to form one with Lionel, but he's really out of his league.
- Diabolical Mastermind: A leading figure in Intergang, the criminal underworld's equivalent of LuthorCorp.
- Forgotten Childhood Friend: Of Lionel.
- Four Eyes, Zero Soul: When played by Rutger Hauer.
- Green Rocks: Carries a string of meteor rock beads in case he runs into Clark.
- Magic Plastic Surgery: To explain his change in appearance. Justified in-universe as he was on the run from Lionel.
- Man of Wealth and Taste: Like Lionel, favours suits and ties.
- The Nth Doctor: Again, his change in appearance.
- Villain Team-Up: With Lionel.
Maxima (Charlotte Sullivan)
- All Amazons Want Hercules: She got turned on when Clark slammed her through a brick wall and pinned her.
- Combat Sadomasochist: Implied
- Hell-Bent for Leather: Initially
- Lack of Empathy: Has no sympathy for the men who die after kissing her.
- Subverted, albeit at a really low level, with Jimmy.
- Murder the Hypotenuse: Tries it on Lois.
- Nigh-Invulnerability: Is unaffected by bullets and Clark ramming her through a brick wall.
- Double Standard: Rape, Female on Male: No, there isn't one! And the show makes a point of acknowledging that. Her pheromones and callous attitude towards other people nicely cement that what she is doing is a bad thing.
- Stripperiffic: Nice bondage gear, Maxima.
- Super Speed: She runs faster than the human eye can see and could perceive Clark's movements.
- Super Strength: She can flip a car through the air and wrestle with Clark.
The Persuader (Fraiser Aitcheson)
- Fantastic Racism: As part of the Human Supremacist Movement, he has this against aliens.
- Giant Mook: Doesn't even get enough characterization to qualify as The Brute.
- We Will Wear Armor in the Future: Has plate armor on his torso and an iron mask over his face.
Winslow Schott / Toyman (Chris Gauthier)
First appearing in Season 8, he murders most of the LuthorCorp Board of Directors, makes an attempt to kill Oliver Queen, and nearly brings down the Daily Planet with a gigantic kryptonite bomb. He returns in Season 9, once again attempting to get his revenge on Oliver, who had framed him for the murder of his boss, Lex Luthor. Captured and imprisoned at last, he is freed by Tess, who puts him to work repairing Metallo.
- Actually a Doombot: Sends a robotic double of himself to Oliver's party in Season 9, so that he can plant a bomb and watch the chaos without actually having to be there in the flesh.
- Alternate Self: Has one on Earth-Prime, as his own son.
- Berserk Button: Being treated as though he were childish, or otherwise not being taken seriously. Oliver causes him to snap just by calling him a clown. Interestingly, it makes him less dangerous, not more so, as he stops using his head and just attacks you.
- Beware the Silly Ones: Who'd a thunk the overweight guy delivering balloon-o-grams could be dangerous?
- Bunny-Ears Lawyer: Schott is a little eccentric, to say the least. But whether you're hiring him as a technician or a Mad Bomber, you're probably getting your money's worth.
- The Dragon: To Lex in "Requiem".
- Dragon-in-Chief: In much the same way Brainiac was to Zod. Lex crippled and on a respirator can't do much without Schott to carry out his plans for him.
- Evil Genius: And not just in the scientific department. Schott's got a real talent for disguising himself, getting into places he shouldn't be, and then talking his way out again.
- Framing the Guilty Party: Oliver frames Winslow for Lex's murder, the one crime in "Requiem" that he isn't responsible for. It results in a police manhunt and forces Schott underground, in a way that the other cirmes he was thought to be guilty of never would have.
- Green Rocks: Uses them to fuel his bombs in "Requiem".
- Happy Fun Ball: Between bombs that resemble dolls, Newton's Cradles, and Cymbal Banging Monkeys, gas-filled Mylar balloons, and a wide variety of other Lethal Joke Weapons, he definitely counts.
- Lethal Joke Character: Holy crow, yes!
- Mad Artist: Sees his toys and his weapons as works of art.
- Mad Bomber: Schott really, really likes his explosives.
- Mad Scientist: An expert weapons designer and technician, with a fondness for placing explosives in his toys. All he needs to add is Mad Doctor and he's got the whole "mad" foursome.
- My Little Panzer: Fired by Oliver after he started weaponising toys.
- Non-Action Guy: Schott's a schemer, not a fighter, and proves it any time that things get physical.
- Not-So-Harmless Villain: By the time his two episodes are over, Schott has become the posterboy for this trope, having damn near killed Clark and Oliver both, despite his silly gimmick.
- Revenge: Wants it on Oliver for firing him.
- Talkative Loon: He doesn't really shut up. Ever.
- Wicked Toymaker: He speaks to Luthor through a camera and microphone concealed in a wooden doll's head, and uses toys such as an exploding Newton's cradle, knockout gas-filled Mylar balloons, and an explosive cymbal-clanging monkey.
- Wounded Gazelle Gambit: Uses it on a nurse in order to convince her to unhandcuff him. "I was just trying to deliver a baloon-o-gram."
- You Look Familiar: Chris Gauthier played a tech in Season 3 before becoming known for this role.
Bruno "Ugly" Mannheim (Dominic Zamprogna)
- Adaptational Attractiveness: Comic book Bruno is a disfigured psycho with a burned face and a penchant for cannibalism. This version has only a tiny scar on his face and is played by Dominic Zamprogna. Still a psycho, though.
- Ax-Crazy: Bruno is visibly twitching in every one of his appearances.
- Card-Carrying Villain: Approaches it. Bruno has no desire to go straight.
- Dragon Ascendant: Murders his boss and takes over the Ace of Clubs and the counterfeiting operation.
- Evil Is Petty: Despite his status as a member of the Metropolis mob, Bruno isn't above committing street level crime.
- From Nobody to Nightmare: Implied by Lois' comments in "Beacon" where he's at the top of a list of suspects in the attempted shooting of Senator Martha Kent, not something that you would expect a petty criminal to be involved in. Makes sense in an even more horrifying context when one remembers that this was the same season where Darkseid was preparing an invasion of Earth, and that Mannheim has traditionally been one of Darkseid's mooks on Earth, thus implying that his rise to prominence in the criminal underworld may have been aided by an alliance with Apokolips, as previously seen in Superman: The Animated Series.
- Hair-Trigger Temper: Crossing Bruno is a good way to get yourself killed.
- Hell-Bent for Leather —> Man of Wealth and Taste: Between appearances.
- Ironic Nickname: Bruno's far from ugly. Of course, it could always be a reference to his personality.
- It's Personal: With Lois/Stiletto.
- Klingon Promotion: Murders his boss to gain control of their operation.
- Minor Injury Overreaction: His vendetta against Lois stems from a tiny scar she left on his face.
- No-Holds-Barred Beatdown: Brutally beats Jimmy and later a Green K-weakened Clark.
- What Happened to the Mouse?: Normally, you wouldn't wonder this about a Villain of the Week, but in "Beacon", Lois mentions him as a possible suspect when someone (we're looking at you, Alexander) takes a shot at Mrs. Kent. It does leave one wondering just what Bruno's been up to these past two years.
- White Gang-Bangers: Has the mentality of one. His boss wants to move up in the world and go legit. Bruno, on the other hand, enjoys being a criminal far too much.
John Corben / Metallo (Brian Austin Green)
- Body Horror: You can see the tubes and struts sticking out of his arms and ribs. It's unpleasant, to say the least.
- Create Your Own Villain: The Blur's saving of a bus load of convicts resulted in his sister's death, which fuels his hatred of the hero and subsequent Start of Darkness.
- Cybernetics Eat Your Soul: Justified. The Green K causes an adrenaline rush, accompanied by emotional and mental instability, impulsiveness and irrationality.
- Dogged Nice Guy: With Lois.
- Green Rocks: Serve as his power source.
- HeelFace Revolving Door: He briefly became a good guy before switching sides again.
- Nigh-Invulnerability: Seeing as he's a robot, this is to be expected. Explosions, freezing—nothing so much as dents Metallo.
- Robotic Psychopath: Zod specifically designed him to be Ax-Crazy, so he falls under this.
- Start of Darkness: The adrenaline rush from the Green K causes Metallo to hyper-focus on The Blur as the cause of all his problems.
- Walking Shirtless Scene: Justified, as his shirtless status increases the effectiveness of the Green K. Not a pretty sight, though.
- We Can Rebuild Him: Courtesy of Zod, and then Tess.
- Weaksauce Weakness: Sunlight seals her back into the amulet. Kryptonian heat vision works nicely, as it's basically concentrated solar energy.
Sam Phelan (Cameron Dye)
A rogue cop that only appears for one episode.
- Badass Normal: He was Clark's first non-powered opponent, and was quite a threat.
- Dying Curse: To Lex.Go to hell.
- Evil Is Hammy:You might be strong, but YOU ARE NOT BULLETPROOF!
- Smug Snake: He even whistles when he makes Clark reveal his powers.
Dr. Laurence Garner (Martin Cummins)
Head of the Summerholt Neurological Institute, or at least head of its less ethical projects. He's responsible for the experimentation on Ryan James, and there's every implication that his research on superhuman abilities and other phenomena didn't start there. It certainly didn't end there.
- Manipulative Bastard: Molly, a social outcast he apparently "saved", is committing murders on his behalf in "Delete".
- Smug Snake: Luthor-grade red tape prevents him from being taken down for quite a while.
Roger Nixon (Tom O'Brien)
- Intrepid Reporter: Evil version.
- Jerk with a Heart of Jerk: It looks like he might make a HeelFace Turn at one point in "Vortex", only for him to reveal that he is not interested in that whatsoever and actually gets worse.
- Killed Off for Real: By Lex.
- Paparazzi: Starts off this way for Lex, only to become more dangerous.
- Sanity Slippage: From smug reporter to would-be murderer.
- Secret Chaser: And far more dangerous than most.
- Smug Snake: He conducts business with a very punchable smirking face.
- Ungrateful Bastard: Jonathan Kent saves his worthless life several times over in "Vortex", and yet he still attempts to murder him in the end.
Van McNulty (Jesse Metcalfe)
- Fantastic Racism: Of any "freaks", regardless of whether they are good or evil.
- Freudian Excuse: Tina Greer murdered his father. Ironically, they never meet.
- Killed Off for Real: Courtesy of Ian Randall in "Asylum".
- Shirtless Scene: Practically shoehorned into both his appearances.
- Van Helsing Hate Crimes: To Van, all meteor freaks deserve to die, whether they've done anything yet or not.
Adam Knight (Ian Somerhalder)
- Ax-Crazy: In "Crisis."
- Death by Secret Identity: A minute and a half after he saw Clark take a bullet.
- Expy: Of Bruce Wayne, believe or not. He's an orphan, his name combined Adam West (as in the actor to play Batman in the 60's TV show) and the "Dark Knight," one of Batman's nicknames. He's done a lot of reading, is very knowledgeable and is a skilled fighter. Many fans actually suspected he was the show's way of getting around the Bat-Embargo before he turned out to be a zombie.
- Killed Off for Real: In "Crisis."
- Manipulative Bastard: A huge part of his ploy to enter Lana's life is basically emotionally smacking her around like a squash ball.
- The Mole: For Lionel.
- Psycho Serum: The Lazarus Serum does not have a positive effect on his sanity.
- Tears of Blood: A symptom of his illness.
Dr Lia Teng (Françoise Yip)
Fleeing from North Korea and needing a green card marriage to stay in the US, Dr Teng's more concerned about continuing her work than handling the consequences.
- For Science!: Only agreed to the whole Lazarus Serum business to fund her research.
- Killed Off for Real: In "Crisis."
Jason Teague (Jensen Ackles)
- Abusive Parents: Financial Abuse from his father, soul-destroying psychological torture from his mother.
- Broken Ace: He was a good-looking football coach and successful athlete, dated the girl most people seemed to consider the prettiest one in the school and, to top it off, he was from a rich, successful family. He was also the product of an abusive relationship with his Evil Matriarch mother, and had no self-esteem or ability to control himself without her help.
- Death from Above: A meteor hit him.
- The Dragon: His mother's.
- Evil All Along: He was with his mother all along as a pawn to get revenge on Lana]].
- Forgotten Fallen Friend: Oliver Queen and Patricia Swann never mention him or ask about the strange circumstances of his death, even though he, they and Lex Luthor were friends as children.
- Hot for Student: With Lana.
- Jerk Jock: Double subverted. Clark suspects him of being bad, he turns out to be a very pleasant guy and then it's revealed he was working for his mother the entire time.
- Made of Iron: He is shot by Lionel and falls of a cliff. He returns slightly the worse for the wear, manages to overpower Jonathan and Martha, and is finally killed when a meteor hits the house.
- Mr. Fanservice: Attractive as many other males.
- Romantic False Lead: For Lana.
- Sanity Slippage: In his penultimate and ultimate appearances, he snaps on and stops being friendly altogether.
Countess Margaret Isobel Thoreaux (Kristin Kreuk)
A medieval witch who was burned at the stake by Genevieve Teague's ancestor, the Duchess Gertrude, Isobel swore vengeance against Gertrude's entire line. She possesses Lana several times over the course of Season 4 in an attempt at stealing The Stones of Power and killing Genevieve.
- Absurdly Sharp Blade: Enchants various weapons so they can pierce Clark's skin.
- Back from the Dead: Though only as a ghost possessing Lana.
- Big Bad: Competes with Genevieve for this role.
- Grand Theft Me: Consistently possesses Lana (much to the latter's chagrin).
- Identical Grandson: What Lana is to her.
- Kung-Fu Wizard: Or whatever that martial art she was using was.
- Large Ham: "The Stones of Power shall be mine! MWAHAHAHA!!!" Fans love her all the more for it.
- Playing with Fire: She generates bright purple flames as one of her main powers.
- Power Tattoo: The presence of her tattoo on Lana is what lets Isobel keep bodyjacking her.
- Sins of Our Fathers: She was betrayed by Duchess Gertrude, one of the Teagues' ancestors; now she wants payback.Isobel: (to Jason) And you...so eager, and yet so tragically doomed to pay for the sins of your ancestors!
Genevieve Teague (Jane Seymour)
- Abusive Mom: She's pretty much destroyed her son's self-esteem, turning him into little more than a puppet.
- Ancient Conspiracy: Her ancestors have been guarding the secrets of the Stones of Power and the Traveler for centuries. The whole Veritas mess was actually started by her family.
- Aristocrats Are Evil: Descended from Duchess Gertrude of France, who had Isobel burned at the stake so she could find the Stones of Power for herself. Genevieve isn't much better.
- Asshole Victim: Isobel possessing Lana kills her. Her unrepentant evilness makes such moment unsympathetic.
- Big Bad: Season 4's.
- Distaff Counterpart: To Lionel.
- Evil Counterpart: To Lionel in Season 4. They're both Abusive Parents, with a lot of money and an obsession with alien life and the Stones of Power. Where they're different is in the why—Lionel abused Lex to try and make him stronger; Genevieve abused Jason in an attempt to control him and hurt his father. Additionally, Lionel turns around and tries to connect to Lex, whereas Genevieve never does and uses her son until the end. And when it comes to the Stones of Power, Lionel is driven by curiosity and the desire for power, Genevieve by paranoia and the need to defeat Isobel.
- Evil Matriarch: She is Jason's abusive, evil mother.
- Impaled with Extreme Prejudice: By Isobel.
- The Man Behind the Man: To Jason. She may also have had a hand in some of the events of the Season 3 finale, as well as the murders of Virgil Swann and Bridgette Crosby. It's rather iffy as to whether this was her or Lionel at work.
- My Beloved Smother: A dark version who tries to control every aspect of Jason's life.
- Non-Action Big Bad: The only time she tries to get physical, it doesn't end well for her.
- Real Life Writes the Plot: Margot Kidder's Dr. Bridgette Crosby was supposed to be Season 4's Big Bad, but left the show following Christopher Reeve's death. Genevieve was created to fill the gap.
- Self-Fulfilling Prophecy: Her attempt to kill Lana before Isobel can get her, results in Isobel bodyjacking Lana for the last time, leading to Genevieve's death.
- Smug Snake: Competent, but she lacks Lionel's magnificence, Lex's Woobie status and Zod's flair, putting her firmly in this category.
- The Unfought: Clark never even meets her.
- Your Cheating Heart: Heavily implied to have cheated on her husband Edward Teague.
Curtis Knox (Dean Cain)
- Affably Evil: He is seen crying over his wife's body as she dies.
- Alternate Self: Has two on Earth-Prime as Vandal Savage and as the adopted father of Kara Zor-El.
- Expy: In theory he is one of Vandal Savage. In the script he originally was Vandal Savage but the producers forbid the writers to use the name. In the show proper, it is implied he is Vandal Savage under an alias. The later portrayal in Legends of Tomorrow confirmed this to be exactly the case where Savage used the alias of Curtis Knox.
- My God, What Have I Done?: Said word for word when he accidentally killed his wife]
- Remake Cameo: He was played by Dean Cain, who played Clark Kent/Superman in Lois & Clark.
- Who Wants to Live Forever?: Can't stand losing the women he loved over the centuries.
Edward Teague (Rick Ravanello, Robert Picardo)
The ex-husband of Genevieve Teague, he went into hiding and became a priest.
- Abusive Dad: Not nearly to the extent of his Evil Matriarch wife or even Lionel, but Edward cut Jason off when the latter refused to join his law firm.
- Amoral Attorney: In the backstory.
- Anti-Hero: Arguably, yes. After seeing that Clark isn't willing to kill Lex, who is on the verge of discovering a device that would let him control Clark, Edward tries to take them both out of the picture in the interests of protecting humanity.
- Badass Preacher: "Quest" shows him to be a decent physical match for Badass Normal Lex, who's at least twenty years younger than he is.
- In the Hood: His priest's robes.
- Killed Off for Real: By Brainiac in "Arctic."
- Knife Nut: Cuts Kryptonian symbols into his victims' chests with a ritual dagger; later uses it against Lex.
- Knight Templar: Sometimes protecting humanity requires a body count.
- Poisonous Friend: Posthumously. Having decided that Dr. Swann was wrong about Clark, he endeavors to prevent his friend's dream from becoming a nightmare by killing Clark and Lex.
- Sinister Minister: Hides out as a priest in St. Christopher's Cathderal.
- Well-Intentioned Extremist: Tries to kill Clark in order to prevent Lex from controlling him.
Vordigan (Steve Basic)
- Death Seeker: Wants Oliver to kill him.
- Expy: Of DC Comics' villain Merlyn, a long-time Green Arrow adversary.
- Evil Mentor: To Oliver, who bailed once he realized just how bad Vordigan was.
- Evil Wears Black: All in black.
- Foil: He's basically who Season 9 Oliver could have become if he'd let himself fall apart a little more.
- Hired Guns: A member of a group of Celtic-influenced cultists and assassins.