A shadow war rages within Mexico’s most infamous cartel. On one side: the heirs of “El Mayo” Zambada, wielding secretive armed cells with names like Los Rugrats and Los Rusos. These groups aren’t mere henchmen – they are mini-armies with their own symbols, leaders, and turf. What do these sicario squads do, and how did they become the backbone of the “Los Mayos” faction’s fight for control? The answers lie deep inside a divided Sinaloa Cartel, where betrayal sparked a battle and every gunman wears a badge of loyalty…
Inside “Los Mayos” Armed Wings
The Sinaloa Cartel has splintered into feuding camps, each buttressed by its own sicario squads. One major camp is “Los Mayos,” the faction historically led by Ismael “El Mayo” Zambada. Even after the July 2024 capture of El Mayo – a sensational betrayal orchestrated by his former allies – the power of his network endures through these armed wings. Today, Mayo’s son Ismael “El Mayito Flaco” Zambada fronts the faction, but it’s the loyal gunmen on the ground who truly sustain Los Mayos’ might. These hitmen cells serve as adaptable enforcement units: they protect drug routes, defend territory, and battle both law enforcement and rival gangs. Each group operates somewhat autonomously, proudly sporting unique nicknames and symbols to signal their allegiance. The result is a “mini-army” structure, where each armed wing answers to the Los Mayos cause while carving out its own turf and reputation.
Origins – A Split and a New Squad
To understand Los Mayos’ armed wings, one must go back to a pivotal schism in Mexico’s underworld. In 2008, the Sinaloa Cartel’s alliance shattered when the Beltrán Leyva brothers accused their partners of betrayal. Facing vengeful former allies, El Mayo Zambada needed a personal army. His answer was Los Ántrax, one of the first modern cartel paramilitary groups. Led by the notorious José Rodrigo “El Chino Ántrax” Aréchiga, this crew of young, ostentatious gunmen became Mayo’s Praetorian Guard. They donned a skull-and-crossbones insignia and cultivated a terrifying brand, openly flaunting weapons and luxury on social media. Los Ántrax violently protected Zambada’s family and interests, setting the template for many “armed wings” to come. Their bloody exploits in the late 2000s – ambushing enemies, guarding convoys – made headlines and cemented the idea that a drug lord could have his own branded hit squad. Though Los Ántrax have since faded (many leaders were arrested or killed over the years), their legacy lives on. They demonstrated how an adaptable, loyal cell could shield a cartel boss from both rival gangs and internal treachery. This model – a cartel within a cartel – became part of Los Mayos’ DNA.
Spreading to the Borderlands
Over time, Los Mayos quietly extended their reach beyond Sinaloa by deploying trusted lieutenants to strategic frontiers. One such figure is Juan José “El Ruso” Ponce Félix, a top Mayo operative who fell out with the rival Guzmán (Chapito) faction after refusing to back them in a showdown. To avert an internal bloodbath, El Mayo sent El Ruso to Baja California. There, the veteran hitman assembled a cadre known simply as Los Rusos – “The Russians,” a nod to his nickname. This armed wing entrenched itself in key trafficking corridors along the U.S.–Mexico border. From Mexicali, Baja California, to San Luis Río Colorado, Sonora, Los Rusos took on the heavy lifting of controlling smuggling routes and local drug markets. In gritty border towns long coveted by rival cartels, Ruso’s fighters clashed not only with law enforcement but with factions loyal to “Los Chapitos” (the sons of El Chapo Guzmán). Los Rusos became Los Mayos’ shield on the border, ensuring that even with Sinaloa divided, Mayo’s faction held critical gateways into the United States. To this day, El Ruso remains at large with a multi-million dollar bounty on his head, and his “Russian” brigade is considered one of the most powerful enforcement arms of Los Mayos.
Los Mayos also bolstered their ranks in Tijuana and northern Baja California through alliances with the Arzate brothers, René “La Rana” (The Frog) and Alfonso “El Aquiles” Arzate. These brothers have long been Sinaloa Cartel emissaries in Tijuana’s lucrative drug plaza. Protected by El Mayo’s patronage, La Rana and El Aquiles operate a fearsome local network – essentially another armed wing – that controls trafficking in the border metropolis. While less is publicly known about the internal structure of their crew, it’s clear they command dozens of gunmen and have terrorized the Tijuana corridor for years. U.S. agencies have sanctioned the Arzates as major traffickers, underscoring how “Los Mayos” influence extends to Mexico’s northwestern edge via independent yet loyal cells.
Enforcers on the Home Turf
Back in Sinaloa’s heartland, the battle lines between Los Mayos and the Chapitos erupted into open warfare by late 2024. Fighting on their home turf, Los Mayos have at least four dedicated armed groups engaged in Culiacán and surrounding areas. Perhaps the most infamous is a cell with a surprisingly playful name: Los Rugrats. Borrowing the moniker from a 1990s cartoon about troublemaking toddlers, Los Rugrats are anything but child’s play. In the underworld grapevine, this group earned fear and notoriety after allegedly assassinating Juan Luis “El Gavilán” Castro, a high-ranking security chief for Los Chapitos. Such a hit, deep in the city of Culiacán, signaled that Los Mayos’ next generation of hitmen could strike at the very heart of their rivals’ defense. Los Rugrats’ leader, Carlos Alberto “Carlitos” Páez, is reportedly a young lieutenant who learned the trade from Los Ántrax veterans. His crew openly embraces the “Rugrats” name – turning a harmless cartoon reference into a badge of lethal intent. In fact, U.S. authorities took notice: in September 2025, the U.S. Treasury sanctioned Los Rugrats and Carlitos as significant narcotics traffickers, confirming their emergence as a major armed wing for Los Mayos. From a base near Culiacán, Carlitos’s men have fueled chaos with ambushes and turf skirmishes, helping keep El Mayo’s heirs in contention for control of Sinaloa’s capital.
Los Mayos’ roster of enforcers in Sinaloa does not end there. Several of Mayo Zambada’s most trusted operators command personal strike teams, effectively mini-armies within the faction. For instance, Alfonso “Poncho” Limón Sánchez – a veteran cocaine supplier once tipped as a possible successor to Mayo – formed his own elite unit dubbed the Fuerzas Especiales Limón (the “Limón Special Forces”). Similarly, Fredy “El Yuko” Angulo Soto, a capo with family ties that once bridged both cartel factions, leads a squad known as the Fuerzas Especiales Yuko. These groups carry their bosses’ nicknames, reflecting deep personal loyalty. By creating custom-tailored hit units, lieutenants like Poncho Limón and El Yuko can handle missions ranging from guarding drug labs and shipments to waging firefights against Los Chapitos in the rugged hills of Sinaloa. They recruit local gunmen – often young men, battle-hardened or eager for cartel glory – and equip them with rifles, tactical gear, and trucks. In a sense, each sub-boss in Los Mayos has become a warlord in their own right, capable of deploying dozens of gunmen under their own banner while still serving the Zambada family’s grander strategy. This decentralized muscle has made Los Mayos remarkably resilient. Even as kingpins fall or switch sides, these cells carry on, fighting for the faction’s stake in each village, highway, and drug corridor.
One enigmatic crew is the Fuerzas Especiales Avendaño (FEA), a hit squad whose loyalties were initially murky when the internal war broke out. The Avendaño family had historical ties to the Sinaloa Cartel’s power structure, and their gunmen were present during previous cartel battles. When infighting began, observers weren’t sure if the Avendaño gunmen sided with the Chapitos or the Mayos. Over time, evidence emerged that the FEA aligned with Los Mayos, following in the footsteps of their patriarchs, who had supported El Mayo in earlier feuds. The Avendaño Special Forces distinguished themselves – and not in a way they would have liked. This unit reportedly suffered the heaviest losses of any Los Mayos group during the war’s first year. Repeated clashes with the Chapitos’ hitmen decimated Avendaño’s ranks, with at least ten fighters from the cell killed in action according to local media. The toll was so steep that Los Mayos’ supporters lamented FEA as the faction’s “most battered flank.” Still, their sacrifice served the cause by slowing enemy advances and reinforcing the idea that, for Los Mayos, loyalty runs deeper than blood ties – these gunmen bled for Zambada’s son just as they once might have for Chapo’s.
Allies and Outposts
Beyond Sinaloa, Los Mayos leverage alliances and regional proxies to maintain influence. In the neighboring state of Durango, for example, El Mayo Zambada long nurtured an alliance with the Cabrera Sarabia family, one of the area’s old narco dynasties. The Cabrera clan were key Sinaloa Cartel partners in the “Golden Triangle” region (where Sinaloa, Durango, and Chihuahua meet), overseeing heroin and marijuana production in the mountains. To cement their power locally, the Cabrera brothers formed an armed wing called Los Cabreras – effectively their own last name doubling as a unit of gunmen. Even after the jailing or death of some Cabrera siblings, the remaining brothers (notably José Luis and Alejandro Cabrera) keep Durango under Los Mayos’ sway through this loyal crew of pistoleros. Los Cabreras enforcers intimidate rivals, control rural territories, and manage drug labs, ensuring that the Zambada faction’s interests remain secure in Durango’s highlands. They epitomize how Los Mayos operate as a federation: key allies maintain their own militias, but all fly the flag of “La Mayiza” (slang for the Zambada faction) when the call comes.
In the deserts of Sonora, another shadowy cell called Los Cazadores (The Hunters) has operated under Los Mayos’ umbrella. Active at least through 2023 around the municipalities of Altar and Caborca, Los Cazadores were led by José “El Chefo” Grijalva Rico, a ruthless figure known for exploiting the harsh terrain. This group patrolled drug smuggling routes through the Sonoran desert – routes contested by rival traffickers and even remnants of the old Caro Quintero network. Los Cazadores earned a fierce reputation in Sonora’s cartel landscape, clashing repeatedly with competing factions. Their alliance with Los Mayos helped stem the expansion of Chapitos-aligned groups in western Sonora, preserving vital corridors that connect to Arizona’s border. By fielding Los Cazadores in Sonora and Los Cabreras in Durango, the Mayos demonstrated their ability to project force well beyond their home base, using regional proxies to guard the flanks of their empire.
Rise of a New “Mini-Army”
One of the most striking developments in recent years has been the creation of Los Flechas MZ, an entirely new armed wing that swelled to a formidable size. Around 2020, Ismael “El Mayo” Zambada personally oversaw the formation of this unit, whose name means “The Arrows” and carries his initial “MZ.” With foresight of brewing conflicts, Mayo recruited roughly 300 young fighters (some as young as 16) into Los Flechas. These recruits, drawn from Sinaloa and neighboring states, were given military-style training and modern weapons. The aim was to forge a loyal fighting force capable of opening new battlefronts against both internal rivals (like Los Chapitos) and external threats (notably the ascendant Jalisco New Generation Cartel, CJNG). Within two years, intelligence reports indicated Los Flechas MZ had doubled in size to more than 600 members, expanding its operations beyond Sinaloa. This group fanned out from initial strongholds in Zacatecas and Durango into states like Aguascalientes and Guanajuato, where CJNG was trying to encroach. By 2023, Flechas fighters were reportedly active as far afield as San Luis Potosí, Colima, and Veracruz – a remarkable spread that underscored how Los Mayos could strike far beyond Sinaloa’s sierras. Essentially, Los Flechas became Los Mayos’ expeditionary army, engaging in conflicts wherever the faction saw opportunities or needed to counter enemy incursions.
The Flechas MZ contingent is notable not just for its size but for its cohesion: they came to be viewed as El Mayo’s loyal foot soldiers, almost like a paramilitary company, with a clear identity and chain of command. After El Mayo’s capture, there were concerns that such a group might splinter or lose direction. But about a year and a half into the faction war, many Flechas members remained steadfast with Los Mayos. Those “arrows” who remained loyal to the Zambadas have been pivotal in holding contested territories and asserting the Sinaloa Cartel’s presence across multiple states. In essence, Los Flechas became the most far-reaching armed wing of Los Mayos – proving that even as the old kingpin fell, the fighting force he built could carry on the fight.
Adaptable Enforcers in a Fragmented Cartel
The saga of Los Mayos’ armed wings sheds light on the Sinaloa Cartel’s evolving nature. Unlike the cartel empires of old that followed a single boss’s command, today’s Sinaloa factions behave more like confederations of semi-independent cells. Los Mayos exemplify this with their patchwork of groups – each born under different circumstances, each led by its own chief, yet all aligned in purpose. This structure makes them remarkably adaptable. If one leader falls, the cell might fragment but others will carry on; if one route is lost, another cell might open a new route elsewhere. Over the past year and a half of war with the Chapitos, this adaptability has been on full display. In Sinaloa’s cities and mountains, alliances can shift quickly: some gunmen originally loyal to El Chapo’s sons have switched sides to Los Mayos, bringing their weapons and know-how with them. Los Mayos’ decentralized approach welcomes such defectors, integrating them into the fold – as long as they fight under a new banner.
For the expat or outsider trying to make sense of Mexico’s cartel headlines, it’s crucial to recognize that “Los Mayos” is not a single unified gang but an array of entrenched, branded armed squads. These groups operate like the cartel’s military wings, with tasks ranging from violent combat to everyday intimidation. They impose the faction’s will on remote villages by day and coordinate multi-state drug shipments by night. When an internal truce falters or a rival cartel tries to push in, it’s these armed wings that mobilize, acting as both sword and shield for the larger organization.
Today, even as Ismael “El Mayo” Zambada languishes in U.S. custody and his health and legacy remain uncertain, the faction he built continues to function – largely thanks to these enforcer cells. Los Mayos’ armed wings have essentially outlived their creator’s reign, morphing into a security apparatus for his successors. They show a kind of institutional continuity: the faces might change, but the roles remain. There’s the cell securing the border, the cell patrolling the mountains, the cell guarding the city, and the cell expanding into new territories.
Meanwhile, the fight with Los Chapitos grinds on. Neither side has landed a decisive blow, partly because each boasts these hardened sub-groups that can absorb losses and regroup. For Los Mayos, the overlapping presence of veteran units (like those run by Mayo’s old allies) and fresh blood (like the Flechas recruits or younger bosses’ teams) has kept them competitive. Indeed, in some confrontations, Los Mayos’ gunmen have shown better coordination and discipline, a possible advantage of having been mentored by older-generation capos.
Conclusion
Inside the world of Los Mayos, armed wings are more than trigger-pullers; they are the pillars propping up an empire in transition. When leadership was removed from the chessboard, these pieces kept moving. They branded themselves with nicknames drawn from cartoons, animals, or legends, but behind the cheeky monikers lies a cold efficiency. Each armed wing is a specialist in survival and conquest – whether through stealthy intelligence gathering, ambushing convoys, or controlling communities through fear. Collectively, they give Los Mayos a fighting chance against both internal betrayal and external pressure.
As Mexico’s cartel landscape grows ever more fragmented, Los Mayos’ experience underscores a broader truth: power now rests in agile, loyal cells rather than one big boss alone. The enduring operations of these armed groups show how a cartel faction, even decapitated, can adapt and live on. Expats and locals alike witness the signs – a sudden road blockade outside a town, a narcocorrido song praising some “Rugrat” or “Russo,” a quiet village where outsiders dare not tread – all evidence that the armed wings of Los Mayos are active and watching. In the end, the Sinaloa Cartel’s internal conflict may be decided not just by who leads, but by whose soldiers on the ground prove most resilient. And “Los Mayos” have bet their future on these branded gunmen who organize, fight, and kill in the name of a fallen kingpin. They are the evolving face of organized crime’s firepower – hidden in plain sight yet unmistakably present, from the mountains of Sinaloa to the border alleyways of Mexicali.
