Who Is Ironmouse, Queen of the VTubers?

The world’s most popular virtual streamer has entered the chat.

“Hello!” Ironmouse bellows in her high-pitched, impossible-to-believe-it’s-real cartoon voice. “Hello, everyone. How’s it going, bros?” Ironmouse—or rather, her pink-haired, devil-horned anime avatar—pauses for several beats, and then several more, as new messages rapidly pour into her live chat.

This livestream, recorded on a random Wednesday night in April, racked up more than 198,000 views, with tens of thousands of people stopping by for a few minutes or hours to pay their respects. Every so often, a ding noise sounds, indicating that someone has tipped her or forked over a minimum of $4.99 to subscribe to her channel—something that’s happened more than 171,000 times in the past two-plus years. Occasionally she stops whatever she’s saying to thank a fan for a gratuity. “You guys don’t have to do this. You don’t have to give me anything,” she says with earnestness.

For seemingly endless stretches of the day and night, the anonymous, mysterious Ironmouse appears on Twitch, joking around with her fans, belting out a karaoke rendition of Whitney Houston’s “I Have Nothing,” playing fantasy-action game Elden Ring and taping her reactions to videos ranging from reviews of an amusement park in Tokyo (“What the fuck, that roller coaster looks sick!”) to a vlog of a Japanese anime-infused store called Sailor Moon (“That dress is so cute. The sweater! Oh, my god, I would wear the shit out of that”).

She curses constantly, occasionally speaks in Spanish, and regularly brings other VTubers on to chat and fill the hours and hours of airtime. All along, people are tipping her in cash or cheering her with “bits,” Twitch’s virtual currency—offerings that are met with Minnie Mouse giggles and sincere gratitude from the host. In other moments, Ironmouse seems exasperated, even angry. “‘Mousey, are you OK?’” she reads from one commenter in the chat. “No!” she blasts. “When am I ever OK? Never. I haven’t been OK in years.” Then she switches back to laughing.

This is the world of Ironmouse, the first female streamer to surpass 100,000 paying Twitch subscribers, and the third most subscribed to Twitch streamer on Earth, just behind e-sports star Ludwig Ahgren and pro gamer Tyler “Ninja” Blevins, according to TwitchTracker. But she is vastly different from those other Twitch stars. Concealed behind a cartoonized virtual character that mimics her real-time movements using motion-capture technology, Ironmouse has become the world’s most prominent VTuber, or virtual YouTuber—a new kind of influencer who’s all but unrecognizable to the people who follow her. She’s a Wizard of Oz for the digital age, beloved for being a fictional extension of herself.