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Culture

What outdoor music fest? An underground robot fight club is SF’s hottest ticket

The “world's first robot combat league” has been drawing sell-outs and online FOMO.

Two robots wearing boxing gloves and protective headgear face each other inside a metal cage ring, surrounded by an audience watching intently.
Robot Sandy in red near victory in the ring at Ultimate Fighting Bots.
Culture

What outdoor music fest? An underground robot fight club is SF’s hottest ticket

The “world's first robot combat league” has been drawing sell-outs and online FOMO.

The basement of Frontier Tower, a new coworking highrise on Market Street, transformed into an underground cyberpunk arena Friday night for a robot fight club. Hundreds of young tech workers, artists, and influencers, packed around the cage-ring, pink and red lights flashing, as a Booster Robotics T1 humanoid-bot duked it out against a G1 humanoid from Unitree. 

Even the ring “girl” was a robot, though of a more DIY variety: a fishnet-clad leg attached to a Roomba, that whizzed around the ring hoovering up dollar bills thrown into the ring.

Human emcees in glittering jackets narrated the action. The robots were dressed in costumes and full protective boxing gear – helmets and gloves that obscured their robotic frames.

If you squinted, you might have thought these short contestants were children playing dress up – until they began to move in a distinctly unhuman way. 

The Standard was invited to cover the event.

A group of people wearing colorful, stylish outfits socialize in a dimly lit room with exposed pipes and an industrial vibe.
A dimly lit room with an enclosed chain-link cage, a laptop and game controller on a table, and a poster reading "UFB Ultimate Fighting Bots" on a pillar.

“It felt like stepping into a sci-fi film” said Maggie Sin, the 30-year-old CEO of My Companions, a startup creating AI twins for creators. “The match was part gladiator and part tech showcase.”

This was the second robot fight club of 2025. The first boxing match, held in July, went so viral that organizers Xenia and Vitaly Bulatov, a husband and wife team who work in marketing and robotics R&D and have an office in the building, felt like they’d spawned a new sport. 

So they launched Ultimate Fighting Bots, the “world's first robot combat league,” piloted by humans, but with all punches from robots. 

A robot wearing blue headgear and boxing gloves faces another robot with orange headgear inside a caged ring while a referee watches closely.

As with the first time around, the Bulatovs kept Friday’s affair shrouded in mystery. It was very much an IYKYK type of event, as evinced by the many social media posts making plaintive requests about how and where to get tickets.

“I have never seen a reaction to a robotics demo like I am seeing to humanoids now,” Vitaly posted on X. “Robotics was historically B2B. Entertainment is what unlocks robotics for consumers and scale now.” 

“Robot fighting feels like a cyberpunk concept come to life,” said Guillaume Verdon, a.k.a. Based Beff Jezos, the co-founder of Extropic AI, a startup that develops thermodynamic computing. “This could turn into a tournament like Formula One, where engineering teams compete.” 

A person in a pink outfit grips a metal fence, shouting excitedly at an event, while others watch and record on their phones nearby.
A woman in a shiny pink coat holds a microphone to a man wearing a red glittery jacket, dollar sign necklace, yellow cap, and dark sunglasses.
Killscreen interviews the MC for the boxing match.

At the show, posters advertising “Bot brawling betting services” and Hologram escort services” lined the walls, a robotic neon-lit therablaster machine dispensed orange and blue drinks through a series of clear pipes, and cyberpunk-themed photobooths snapped commemorative pictures.

Guests were not invited to the part of Frontier Tower where the Bulatovs keep their $50,000 Unitree Robotics Humanoid G1 and their $75,000 Boston Dynamics Spot dog.

The vibe was surreal, with pulsing lights, glowing neon, and a giddy excitement percolating the room. Faces pushed against the cage. The beats were loud, the mics turned up. Between bouts, you could wander neon-lit labyrinthine corridors leading to backrooms stocked with instant ramen, bubble chairs, arcade games, and even a robot bartender.

Two young children in boxing gear face each other inside a cage while an announcer speaks into a microphone nearby.
A robot wearing a skirt and boxing gloves stands inside a cage ring with people around, under purple and blue lighting.
Source: Zara Stone/The Standard

Constance Li, the founder of Sentient Futures, attended both robot fight clubs this summer. “This time, they brought out the premium Unitree G1 robots and gave them personalities and backstories,” she said. Attendees could root for Colonel Havoc, Jockchain, and others. The robots are increasingly sophisticated, she said. “[They] moved much more naturally and were able to both deliver and withstand more blows.”

But Li also pondered the future of these fight clubs. “What if the robots eventually end up feeling pain? How would we recognize it if it happens?” she said. “Will this industry become more exploitative like cock and dog fighting, or will the robots have some share in the wealth and excitement of their matches, like UFC?”

A robot wearing a blue floral dress and red boxing gloves fights another metallic robot inside a cage with a crowd watching behind.

Sofiia Shvets, the CEO of Claid AI, a generative AI photography startup, enjoyed the bouts. “It was more fun than I expected,” she said, noting the time between rounds could be shortened; the robot R&R took around 20 minutes.

“I’m exhausted but happy,” said Omelia Atreides, a technologist and artist, resplendent in a form-fitting red suit, who helped produce the event. “We planned the last fight in four days, but this one took four weeks — it had so much more.”  

Going forward, the production promises to be even more elaborate. “We put safety first and confined some of the interaction,” said Emerson Segura, who helped run robot operations for this event. “In the future the complexity, interactivity, and proximity to people could go up along with the entertainment value.”

A small black-and-white dog curiously sniffs a four-legged silver robot resembling a mechanical dog on a tiled floor.

Zara Stone can be reached at [email protected]