Ironmouse

Ironmouse (born January 11)

Beyond streaming, Ironmouse has performed at major events such as The Streamer Awards and Final Fantasy XIV Fan Fest, and has collaborated with companies and creators including Jakks Pacific, Fortnite, and bbno$.

Life and career Early life Ironmouse originally planned to pursue a career as a coloratura soprano opera singer, but was diagnosed with common variable immunodeficiency (CVID), an immune disorder that has left her largely bedridden and isolated. It has also led to a lung infection called mycobacterium avium complex as she revealed in 2021. This required her to remain isolated from others, a situation which intensified in 2020 amid the onset of the COVID-19 pandemic.

2017–2020: Streaming debut and VTuber identity In 2017, she began to pursue a career as a streamer instead, as she was "lonely and wanted something to do". —to stream with a digital avatar to conceal her identity.

After discovering that there were a growing number of users referring to themselves as VTubers like Kizuna, she began to consider herself one. The Ironmouse persona was expanded into a character, which she referred to as a "bigger version of me" and being like a superhero costume; her avatar usually takes the form of a horned demon with pink and purple hair, Ironmouse's audience on Twitch began to see increases over 2020 and 2021. The increasing revenue from her streams also allowed her to afford higher-quality health care. In turn, improvements to her condition enabled her to perform longer streams on a more regular basis.

Ironmouse is known for her frequent collaborations and friendship with Welsh YouTuber CDawgVA. Their dynamic has been described as complementary, with Ironmouse being more chaotic and energetic in contrast to CDawgVA’s more grounded personality. The two have collaborated across various projects, including appearances in each other's video content, joint participation in streaming events, and voice roles in games.

In February 2022, Ironmouse held a subathon event, a nonstop stream in which a countdown clock was extended whenever viewers purchased paid subscriptions or otherwise made donations to the channel. Over the course of the event, which ran for a total of 31 days through March 7, 2022, with nearly 172,000 subscribers in total by the end of the event.

According to data from StreamElements and Rainmaker, Ironmouse was the eighth-most watched streamer on Twitch during the month of February 2022—marking the first time that a VTuber had made their monthly top 10. Discussing the event, Ironmouse felt that it was "the only time I didn't feel lonely because I felt like I had somebody there all the time. It was the least lonely I've ever felt in a long time."

In December 2022, she was listed among the "heroes" on the Plasma Hero website for raising awareness about CVID and encouraging viewers to donate plasma. She has also received praise for encouraging donations to The Immune Deficiency Foundation (IDF), a charitable organization which helps people suffering from conditions like hers through research and improving the quality of life of people suffering from primary immunodeficiency. According to StreamsCharts, Ironmouse was the second most-watched female Twitch streamer of 2022, behind Amouranth. In March 2023, she won Best VTuber at The Streamer Awards.

In June 2023, Ironmouse held a second subathon event as a charity event, with half of all revenue from Twitch subscriptions and Bits, as well as merchandise sales during the event, being donated to the Immune Deficiency Foundation. The subathon broke her previous record of 172,000 subscribers and set a new record of 205,488 subscribers.

On December 7, 2023, Ironmouse won the award for Content Creator of the Year at The Game Awards 2023, becoming the first VTuber to win in the category. In February 2024, she repeated as Best VTuber and was also nominated for Streamer of the Year at The Streamer Awards.

On September 10, 2024, YouTube suspended Ironmouse's VOD channel, reportedly due to copyright strikes. On September 20, her main YouTube channel was also suspended; in response, she tweeted that she was "incredibly sad and shocked". Both of Ironmouse's YouTube channels were reinstated on September 23. On September 24, Ironmouse broke the all-time subscription record for a female streamer on Twitch for the third consecutive year, exceeding her previous record of 205,488 subscribers. That same month, Ironmouse overtook Kai Cenat as the most-subscribed channel on Twitch, setting a new all-time record for the service on September 30. Her record lasted until November 2024, when it was broken by Cenat. In December 2024, Ironmouse once again won the Streamer Award for Best VTuber, and was also nominated for Best Marathon Stream and the Sapphire Award. An annual report from StreamsCharts showed that Ironmouse was the most-watched female streamer on Twitch in 2024.

In June 2025, Ironmouse was featured by Canadian rapper bbno$ in his song "1–800"; the rapper also cosplayed as Ironmouse after meeting a goal for likes on X.

2025–present: Departure from VShojo and independent career On July 21, 2025, Ironmouse announced that she had resigned from VShojo effective immediately, accusing the agency of having not paid her a "significant" amount of money, and of owing the Immune Deficiency Foundation at least $500,000 in unpaid donations from her Twitch revenue. In the aftermath of her announcement, all of VShojo's remaining members also publicly resigned from the agency, with former members such as Kson also presenting similar allegations of unpaid revenue; the company's shutdown would be announced on July 24, three days after her video's release. Concurrent with her departure, Ironmouse launched an independently-run charity campaign for the Immune Deficiency Foundation; in two days, the fundraiser surpassed $1 million. In August, she appeared on Rolling Stone's list of the 25 Most Influential Creators of 2025.

At The Streamer Awards 2025, Ironmouse performed “We All Lift Together” and “Lullaby of the Manifold” from the Warframe soundtrack alongside professional opera singer and YouTuber MarcoMeatball. She also received two nominations that year for Best VTuber and Best Stream Duo with CDawgVA.

In March 2026, Ironmouse and Jakks Pacific, a U.S. toy and consumer‑products manufacturer, announced a merchandise collaboration. The partnership made Jakks the first major American producer of officially licensed Ironmouse merchandise, including figures, plush, collectibles, tech accessories, and cosplay items. The products are intended for distribution through Jakks’ direct‑to‑consumer platforms, Ironmouse’s merchandise storefronts, select retail partners, and collector‑focused outlets.

In June 2026, Ironmouse performed a short live concert at Final Fantasy XIV Fan Fest in Anaheim, singing several songs from the game as part of the event’s official programming. Square Enix later highlighted her appearance on social media, thanking Ironmouse for joining the event and listing the songs she performed, including “Give It All,” “Sinister,” and “Return to Oblivion.” The following month, Ironmouse collaborated with Fortnite through the introduction of a Mythic in‑game Sprite item themed around her character. The Sprite was accidentally released early during the July 30 v41.30 update before being vaulted, with Epic Games later confirming a proper launch on August 4, 2026 to coincide with the anniversary of her VTuber debut. The item provides health regeneration when the player is low, along with Cloak‑based partial invisibility and low‑gravity movement while active. Ironmouse addressed the rollout during livestreams, noting that the Sprite had been “released too early” and would return on her anniversary.

Philanthropy and CVID awareness From early in her career, Ironmouse has been keen on raising awareness about common variable immunodeficiency (CVID) and primary immunodeficiency (PI). In an interview with Plasma Hero, she said, "At the time, I think I was so worried I didn't realize how talking about it could raise awareness; I don't make my illness the main focus of my content, but I do speak about it from time to time for education and awareness and to explain why I may not be feeling my best at times". She also hosted a 30-day subathon in June 2023 and a 39-day subathon in September 2024, where she donated half of all the subscription income to the IDF.

Ironmouse also has raised a significant amount of awareness for donations and the importance of plasma. She stated in an interview with Plasma Hero, "I know so many people encourage blood donation, and I want to make sure I can reach as many people as I can to tell people about living with a PI and donating plasma. I want more people to know that we are here and we need support, but I also want people to know that they are not alone."

Discography Singles

Covers

Filmography Video games

Awards and nominations