In his ordinary life, doctor Curt Connors is the opposite of a villain: a brilliant biologist, a loving husband, a devoted father, a man who lost an arm in the war and seeks in science a way to recover it. He studies the ability of reptiles to regenerate limbs and, in an act of desperation, synthesizes a serum with reptilian DNA and injects it into himself. The arm grows back. But with it comes something else: the serum rewrites his brain chemistry and brings out the Lizard, a cold, territorial, aggressive identity that neither reasons like Connors nor loves what Connors loves. For the theory of biochemical imbalances, Connors is the perfect fable: a substance enters a brain and a different conduct comes out.
// The theoryThe chemistry that changes the man
The theory of biochemical imbalances, supported by works such as those of Matti Virkkunen on low serotonin in impulsive violent offenders, holds that behavior rests on a chemistry that modulates it: neurotransmitters, hormones, toxins, substances that raise and lower the threshold of impulse control. Connors carries that idea to its dramatic extreme. His serum is not just any drug: it is a substance that alters neurochemistry at its root and, with it, the personality. When the reptilian compound dominates his system, the prefrontal brake that kept Connors civilized dissolves; the territorial aggressiveness and predatory coldness of the reptile emerge. The physical transformation —the scales, the tail— is the visible metaphor for what the theory describes in molecular terms: change the chemistry, change the behavior. Connors does not decide to be the Lizard; his altered biochemistry pushes him there every time the serum gains ground.
Jekyll and Hyde in molecular terms
Connors is the modern reincarnation of Dr. Jekyll and Mr. Hyde, and not by chance: Stevenson's novel already sensed, in 1886, what neurochemistry would formalize a century later —that a substance can draw another being out of the same person—. In Connors the formula is reptilian, but the mechanism is the theory's: a molecule that rewrites the brain's chemical balance and, with it, the threshold of aggression. What is valuable about the character is that he shows both faces at once: the good man and the chemical monster inhabit the same skull, and the boundary between them is not morality but the concentration of serum in his blood. This is exactly what the theory claims of the real brain —that impulse control depends on a fragile chemical balance—, only taken into the realm of myth. And that is why Connors, unlike a born villain, is not hateful but tragic: he is a good man fighting against his own chemistry, which is a far more recognizable fight than it seems.
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// The subjectThe scientist who experimented on himself
There is a cruel irony in Connors: it is a scientist who destroys himself with science, an expert in biochemistry victimized by biochemistry. He injected the serum himself, knowing the risks, driven by a mix of rigor and desperation —that of a man who cannot bear his mutilated body—. That makes him responsible for having opened the door, and the theory does not deny it: recognizing that his chemistry transforms him does not erase that he was the one who took the vial. But it also turns him into a nuanced subject: he is not a wicked man who sought power, but a man who sought to heal himself and unwittingly released a predator he no longer controls. The Lizard commits real crimes and Connors bears them; his drama is that of the addict or the sick person who knows that, under a certain chemistry, he stops being himself —and that his only salvation is not punishment but the treatment that restores balance to his brain—.
El Lagarto
// The crackChemistry does not exonerate the Lizard
The crack with Connors is the most dangerous of the whole theory: using chemistry as an alibi. It is tempting to say "it wasn't Connors, it was the serum," and the fiction feeds that reading by separating the man from the monster so cleanly. But the honest theory refuses that leap. In the real world no biochemical imbalance —not low serotonin, not a drug, not a toxin— completely erases the will; it lowers thresholds, it does not annul responsibility. Connors's chemistry explains why it costs him more to hold back, but it does not make him innocent of what the Lizard does. The biochemical factor is a risk, not a destiny, and even less an absolution.
The opposite crack would be the reverse: to deny the chemical component entirely and treat Connors as a mere criminal who chooses evil, ignoring that his brain is genuinely altered. The mature reading holds both things —that chemistry pushes him and that he remains responsible—, and from that it draws what matters: that his imbalance, being chemical, is in principle modifiable. In real life, a Connors would not need a cell but a treatment that rebalances his neurochemistry. That is the promise of the theory against fatalism: the brake the serum dissolved is, molecule by molecule, a brake that can be repaired.
Repairing the brake instead of punishing the monster
Connors matters because he embodies the hopeful part of biological criminology. His tragedy is not that he is wicked, but that his chemistry betrays him —and chemistry can be treated—. Every time we reduce someone to their monster ("he's violent, he's a psychopath, he's dangerous") we forget to ask what the biochemical theory puts at the center: what is out of balance, and can it be corrected?. In the real world, behind many impulsive behaviors there is low serotonin, poorly regulated blood sugar, toxins, addictions —factors that medicine and public health can address—. The lesson of Connors is twofold: do not exonerate the Lizard because of his chemistry, but do not resign yourself to him either. The man who injected the serum is responsible; the brain the serum unbalanced is, in principle, repairable. And a criminology that understands this looks at violence not only as an evil to punish, but as an imbalance that, sometimes, can be cured.
Three key takeaways
- Curt Connors, a gentle scientist, injects himself with a reptilian-DNA serum to recover his arm and his rewritten brain chemistry draws out the Lizard: the molecular version of Jekyll and Hyde that illustrates how a substance alters behavior.
- He embodies the theory of biochemical imbalances (Virkkunen, serotonin): impulse control rests on a fragile chemical balance, and when the serum alters it, the brake dissolves and predatory aggressiveness emerges.
- The key crack: chemistry does NOT exonerate. It lowers thresholds, it does not erase the will; the Lizard is responsible. But because it is chemical, his imbalance is a modifiable risk factor —in the real world he would have treatment, not just a cell—.
Sources · further reading
- Solms, M. & Turnbull, O. (2002). The Brain and the Inner World. Other Press.
- Virkkunen, M., et al. (1987). CSF monoamine metabolites in violent offenders. Archives of General Psychiatry.
- Stevenson, R. L. (1886). El extraño caso del Dr. Jekyll y Mr. Hyde. Longmans.
Case-file questionsFrequently asked questions
¿Quién es El Lagarto?
El Lagarto («Curt Connors») es un villano de Spider-Man, analizado en KRIMINIS con la lente de la criminología. A vial of reptilian serum promised to give him back his arm.
¿Por qué El Lagarto (Curt Connors) se convierte en villano?
Curt Connors was a gentle scientist, a father, a resigned amputee. He injected himself with reptile DNA to regrow his arm and woke the Lizard —a chemistry that imposes another conduct on him—.
¿Qué teoría criminológica explica a El Lagarto?
El caso de El Lagarto se analiza desde la Desequilibrios Bioquímicos. Biochemical imbalances (Virkkunen, serotonin, toxins) hold that altering brain chemistry changes behavior. Curt Connors, from Spider-Man, is their perfect fable: a gentle scientist injects himself with a reptilian-DNA serum and his rewritten neurochemistry draws out the Lizard, a cold and aggressive identity. Molecular Dr. Jekyll and Mr. Hyde —but with an honest nuance: chemistry does not exonerate him, and in the real world his imbalance would have treatment—.
