From Bullied to Bully to Butcher

At 300 pounds, freshman Bryan Kohberger was an easy target (Fixler, 2023). He always had been. Classmates at Pleasant Valley Intermediate and Pocono Mountain East High School in Pennsylvania subjected him to the kind of systematic cruelty that can leave lasting scars. He was miserable, posting in online forums about feeling like "an organic sack of meat with no self-worth" (Fixler, 2023).

Then Bryan took charge. By the end of his junior year, he had lost over 100 pounds through a combination of obsessive dieting, punishing workouts, and kickboxing training (Fixler, 2023). His body transformed from soft target to hardened weapon. So did his psyche.

This could have been an inspiring success story: a bullied kid overcomes adversity, gets healthy, and helps others facing similar struggles. Instead, friends witnessed the formerly meek, withdrawn victim become someone they barely recognized. "It was like he'd decided that since he'd been the victim, now it was his turn to make others feel small," one peer recalled (Fixler, 2023). He didn't become confident; he became controlling. He didn't find peace; he found power.

Kohberger had flipped the script, but in the worst possible way.

The Victim-to-Vulture Pipeline

A study found that about 22 percent of bullying victims will go on to bully others, a group researchers tag as "bully-victims" (Ttofi et al., 2012). This percentage is significantly higher than in the general student population. Children with special needs are particularly vulnerable to this cycle of victimization and aggression (Espelage & Swearer, 2003). For students who lack the emotional or intellectual resources to process their pain, retaliating with aggression may feel like empowerment.

Chronic victimization increases the likelihood of becoming aggressive toward others (Copeland et al., 2013; Marsh et al., 2023). Persistent bullying doesn’t just cause pain; it alters a victim’s worldview and coping mechanisms.

Protective factors can break the bullying cycle. These include strong support networks, adults modeling healthy conflict resolution, and timely interventions during the “transition window” immediately following victimization (Gini & Pozzoli, 2013). Without these, victims may shift from believing “bullying causes profound pain and must be stopped” to “vulnerability invites abuse, so I must never be vulnerable again.”

This aligns with research on “maladaptive coping through dominance-seeking” (Olweus, 2013; Hawley et al., 2011). Victims who become bullies often view relationships as zero-sum power dynamics, interpret neutral social cues as threats, and see aggression as reliable self-protection (Olweus, 2013; Hawley et al., 2011).

The Empathy Paradox

This transformation raises questions about the development of empathy. Experiencing pain is often assumed to sensitize us to others’ suffering, but this isn’t always true. Neuroimaging research shows chronic bullying can alter brain regions tied to emotional regulation (Teicher et al., 2010). Using fMRI scans of adolescents who faced severe bullying, researchers found abnormalities in the corpus callosum, linked to psychiatric symptoms (Teicher et al., 2010). In some victims, the brain may suppress empathic responses as a protective mechanism.

Kohberger’s behavior seems to reflect this: not just a lack of compassion but active hostility toward others’ vulnerability. Having been mocked for his weight, he mocked others (Fixler, 2023). Having been excluded, he excluded others (Fixler, 2023). Having felt worthless, he treated others as worthless (Fixler, 2023).

This isn’t mere revenge. It’s a reorganization of how one perceives relationships. In Kohberger’s worldview, kindness wasn’t moral; it was foolish. Vulnerability wasn’t human; it was weak.

From Bully to Killer: The Escalation

What drove Kohberger from schoolyard bully to quadruple murderer? Research on the “violence escalation pathway” may offer us some insights.

Longitudinal studies show that bully-victims who don’t receive treatment may follow a pattern of escalating aggression, starting with small acts to assert power, progressing to aggression as a primary coping mechanism, and, in rare cases, culminating in serious violence (Farrington & Ttofi, 2011; Ttofi et al., 2012). This small minority finds psychological satisfaction in violence.

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Those who escalate often exhibit:

• Social isolation that prevents corrective feedback
• Beliefs that justify violence
• Repeated rejection experiences that reactivate trauma
• Access to means of serious violence

Kohberger’s story could have ended differently. Interventions during the transition from victim to aggressor show significant success in halting the bully cycle (Bradshaw et al., 2015). But Kohberger’s transformation was superficial. He changed his appearance but not his wounded psychology (Fixler, 2023). Bullying taught him his body was the problem, so he changed it. But the real issue was his mind.

The Bottom Line

The boy who felt like “meat” became a man who treated four University of Idaho students as precisely that (NBC News, 2025). Kohberger’s case shows how unprocessed trauma, combined with risk factors, can metastasize. Real change requires not just new habits but new ways of healing pain and finding one’s place in the world. Otherwise, we risk becoming what hurts us—or worse.

The answer to bullying isn’t to accept victimization or pass the pain along; it's reclaiming one's power without taking it from others. As Kohberger’s case demonstrates, building strength on others’ weaknesses doesn’t erase the scared, bullied kid. It creates a more dangerous version.