Ironmouse | VTuber with a bubbly passion

Ironmouse is a female Puerto Rican-American VTuber, singer and Twitch streamer. A veteran of the industry, she debuted in August 2017. She is one of the most successful VTubers to date, earning numerous awards and reaching 2 million Twitch followers in 2024.

A trained opera singer, she is known for her singing talent, as well as her crazy personality, sassy attitude and high-pitched voice. She also serves as an inspiration to fellow sufferers of chronic illness. Originally an independent streamer, she became a founding member of the agency VShojo in 2020. In July 2025, she left VShojo and continued as an independent VTuber.

A demon queen who goes by several names… but has also been rumored to be Satan herself. She is a friendly, fun loving demon who ran from her duties and escaped the confines of Hell/the underworld in order to make new friends, learn new things and live life to the fullest. She has an obsession with the internet, music, lewd stuff, nerd shit, and all things cute. She wears special magical bells on her body to contain and control her power in order to better blend into the human world. If her bells ever get removed, pure chaos would ensue. It has been said that once the bells are removed, her true demon queen form will be revealed. All she wants to do is to have fun and see what the human world is all about and… make as many souls friends as she can.

Ironmouse is known for being lighthearted and funny, to such an extent that there is rarely a stream where she fails to make her chat or streaming partners laugh.

In early 2020, she was very shy and only showed confidence when streaming alone or with close friends. At this time, she was very nervous around others, but over the next two years she began to develop more confidence.

Her chaotic nature was more pronounced in her early streaming years, when she tended to ask odd questions out of the blue or discuss about strange topics. Her seemingly unfiltered comments often left her conversation partners speechless. Over time, she learned to be more cautious, but she doesn't always succeed, especially when she's around like-minded friends.

In her early streaming days, she used a lot of suggestive language, but as her audience grew and she developed more confidence this behavior decreased. Although she has not completely stopped using suggestive language in her streams, it is tame enough that she no longer deletes VODs for fear of possible ToS bans.

She cares a lot about her friends and gets sad when she hears someone being mean to them, even more so than when they are being mean to herself.

One of Ironmouse’s most notable personality features is her abundant charisma. She is exceptionally skilled at making people smile, feel comfortable, or even making them feel emotional. She is generally very friendly to everyone, though she sometimes roasts people who are mean in chat or behaves in a "tsundere"-type fashion. Tsundere is a Japanese term for a character who is caring but has difficulty expressing positive feelings for someone and instead acts temperamental and hot-headed. There were also rare instances when she acted in a "Yandere"-type fashion, laughing maniacally and saying things like "I love you so much that you have to die", these flashes of yandere appearing in games where she had to kill off her collaboration partners.

She is very hardworking, as she puts in effort every day to stream and provide content for her viewers despite her circumstances. Even the name "precious family" that she chose for her community shows how much she loves what she does and how grateful she is for the love that the community gives her. She gets very emotional when she talks about how far she has come against all adversity.

She is known to become scared easily and likes to stall before playing horror games, and even mid gameplay, but simultaneously loves the feeling of being scared.

Ironmouse's widely accepted "primary" appearance features a highly stylized character design with a blend of demonic and cutecore elements. She has long, pastel pink hair with lavender streaks, styled in voluminous waves that fall past her waist. Two white horns with dark tips curve from her head, and she has small black bat wings on her back. Her eyes are large and gradient-toned in pink and purple, with heart-shaped pupils.

Her outfit is asymmetrical and detailed: a layered black and white skirt with a decorative chain belt and a heart charm, a white lace bustier under a black harness, and oversized pink sleeves with bat wing accents. One leg is covered by a semi-transparent black stocking with a garter and tall black boot, while the other has a white opaque stocking with hearts and stars, paired with a light pink platform shoe. A thin black tail with a pink, heart-shaped spade tip extends behind her, partly wrapped in a silver chain. The color scheme throughout is consistent with pink, black, and white tones, with small heart-shaped details repeated across her design.

Ironmouse debuted in 2017 on a smaller streaming platform called YouNow. From the outset, she streamed using a copy of Facerig which a friend bought her on sale for $5.99, and a free avatar from the Steam Workshop (Tohoku Kiritan by Ketama). Her streaming setup was rudimentary, and she used a pair of iPhone headphones as a microphone.

Ironmouse's Twitch account was created on 28 September 2017. Her YouTube account was created one day later on 29 September 2017. Her earliest known Twitch stream occurred on 15 August 2018. Ironmouse's goal was not money or popularity, but to make friends and have fun talking to people. She was initially nervous about joining Twitch, but soon found the community welcoming.

She did not use the term "VTuber" to describe herself at first, as the term "Virtual YouTuber" had only been coined in late 2016 by Kizuna Ai, and had yet to be popularized; Ironmouse did not consider herself a "real" VTuber until 2020, when she saw a rise in popularity. For example, a Valentine's day stream on 12 February 2020, in which she used her Ironmouse 2D model and collected donations for "Ironmouse 3.0", used the title "Dear internet am I real V-Tuber yet?"

2019 In late 2019, she switched to Twitch as her main streaming platform, although she would continue to stream on YouNow in early 2020.

In December 2019, Ironmouse unveiled her original Live2D model by Ketama. Designed by Mousey herself, it would become known as the Season 1 model.

2020 The oldest recorded appearance of Mousey's "Season 1" model is in the 12 February 2020 Valentine's stream, which reached a peak of 69 viewers.[8] She would continue to use this model throughout 2020 (see Ironmouse/Models).

On 15 May, Ironmouse became a Twitch partner.

In June, she revealed her 3D model, modeled by jjnomu.

On 1 July, she became a YouTube partner.

On 24 November, she announced her membership in the new VTuber agency VShojo as one of its first generation of members, along with Projekt Melody, Silvervale, Zentreya, Nyatasha Nyanners, Froot and Hime Hajime. Her introductory video was drawn by Froot, and featured a brief cameo by Hime Hajime, who appeared on the cover of a book which Ironmouse reads. She introduced an updated version of her model.

2021 On 15 January, she revealed longer hair as an update to her "Season 1" 2D model, which was adopted from her 2020 Christmas costume.

On 11 February, she revealed a new 2D model along with the "Seasons" concept, explaining that each model has its own backstory in a different universe and has its own designated season. This new model, designated "Season 2", was illustrated by Nia, who had designed the original model for Nyatasha Nyanners, and rigged by etctr.

On 9 March, Ironmouse was featured on REACT, a popular YouTube channel, in an episode titled "Teens React To VTubers".

On 13 March, she hosted a special 300,000 YouTube subscriber celebration stream on her YouTube channel, where she also officially debuted her new 3D model. The new model was modeled by TheArtGun and based on the Season 2 model. Before unveiling the model, she used an unfinished version as a joke, which was mostly bald.

On 31 March, Anthony Padilla released his YouTube video "I spent a day with VTUBERS", in which he interviews Ironmouse along with Nyatasha Nyanners and Zentreya.

On 13 April, VShojo members Ironmouse, Froot, Silvervale, Veibae and Nyatasha Nyanners played with prominent Japanese VTubers Kizuna Ai, Higuchi Kaede and Dennou Shojo Siro in a collab called #VAmongEarth.

On 6 May, she revealed her "full demon form" ahead of its scheduled debut on 11 May. The reveal took place during a collaboration with Anthony Padilla,[18] during which he used his VTuber model to stream for the first time. This new 2D model was illustrated by VTuber Rosuuri and modeled by etctr, and designated OVA Universe 666.

On 12 May, she debuted her "OVA Universe 666" demon form.

On 14 May, she reached 500,000 Twitch followers. On the same day, Caleb Hyles released the collaborative cover song "Omae Wa Mou" on YouTube.

On 3 June, she debuted her summer outfit, a version of her 3D model created by TheArtGun.

On 19 June, she collaborated with Mori Calliope in the second ever hololive x VShojo collab. The event was streamed on Ironmouse's Twitch channel and attracted around 25,000 viewers at its peak.

On 5 August, she celebrated her 4th anniversary and held a 11 hour charity fundraiser stream. She unveiled her new idol outfit, illustrated by Nia and based on the Season 2 2D model. She promoted the plasma donation website plasmahero.org, which was temporarily unavailable due to the large number of users, and raised over $101,000 for the Immune Deficiency Foundation. She also premiered a new intro video titled "Gremlin's Den".

On 12 August, she premiered the first episode of her talk show "Speak of the Devil". Her first guest was Sykkuno, a famous YouTuber and Twitch streamer.

On 30 August, she reached 500,000 YouTube subscribers.

On 2 November, Streams Charts announced the most-watched female Twitch streamers for October 2021, with Ironmouse in 6th place with one million hours watched.

On 5 November, she debuted her 3D Demon form. Modeled by jjnomu and with facial tracking by TheArtGun, this 3D model was based on the OVA Season 666 2D model designed by Rosuuri.

On 18 December, Ironmouse, Silvervale and Nyatasha Nyanners participated in VILLS vol. 3, one of the biggest VTuber events in Japan. She enchanted the audience with her vocal performance and the new VShojo VILLS idol costume. Her VILLS concert model was designed by epebe and modeled by Yoolie.

2022 On 11 January, Ironmouse debuted a new angel form Live2D model, designed by hen-tie. She also celebrated her 6,669th birthday for the third year in a row, during which she received a Sentai style 3D model and a Sentai-style BGM as gifts. Over 23,000 viewers attended her birthday stream.

On 4 February at 7PM EST, Ironmouse began a subathon, during which each sub, gift sub, and every 500 bits or $5 donated would extend the stream duration by 15 seconds. This resulted in Ironmouse streaming continuously for days, with guest appearances and highlight reels filling in while she was asleep. Ironmouse actually continued to track her model while she was asleep, meaning that she was indeed on stream for the entire duration, sans breaks and technical disruptions.

On 15 February, during the subathon, Ironmouse reached 1 million Twitch followers. Just over one hour later, she became the most subscribed ever female streamer on Twitch, surpassing the previous record of 73,623 held by kkatamina. On 19 February, Ironmouse became the #1 currently subscribed streamer on Twitch, also making her the #9 most subscribed Twitch streamer of all time.

On 21 February, she reached 100,000 Twitch subscribers and 500,000 Twitter followers. Hours later on 22 February, she became the 6th all-time most subscribed Twitch user. On 24 February, during an interview with Luca Kaneshiro, Ironmouse became 5th all-time most subscribed Twitch user, and on 25 February she reached all-time 4th most subscribed. On 28 February, on Day 24 of the subathon, Ironmouse overtook Critical Role as the #3 all-time most subscribed Twitch channel, behind only the hugely popular streamers Ludwig and Ninja, who were no longer active on Twitch by this time.

Ironmouse's subathon lasted 31 days and ended on 7 March at 6am EST. She reached a peak of 171,818 subscribers.

On 20 April, an interview between Ironmouse and The Washington Post was published.

On 27 October, Streamy Awards nominated Ironmouse in the VTuber category, along with her fellow VShojo members Zentreya, Nyanners and Veibae.

On 2 November, she debuted her Demon Queen model designed by Kamo and rigged by Iron Vertex. Over 30,000 viewers attended this debut at peak.

2023 On 11 January, she held her 3D concert, which also featured her first single, "Waifu Jam."

On 28 February, she debuted her Racing Queen model, designed by Epebe, illustrated by Nanoless and rigged by KevinX.

On 11 March, Ironmouse won Best VTuber in the 2023 Streamer Awards.

On 1 June, Ironmouse began a charity subathon, in which the stream duration would be extended by 13 seconds per subscription, 500 bit donation, or $5 donation, with all earnings, merchandise proceeds, and half of subscriptions going to the Immune Deficiency Foundation. The event lasted a full month and featured guest appearances by numerous VTubers and streamers.

On 27 June, during the subathon, Ironmouse surpassed her previous record of 171,818 subscribers.

On 1 July, the subathon closed with over 51 hours left on the timer. Ironmouse promised to stream the remaining hours following a break to appear at a panel at the Anime Expo convention. According to TwitchTracker, Ironmouse reached a record peak of 205,488 subscribers. She reached #1 current most subscribed Twitch user, and #4 most subscribed Twitch user of all time.

On 6 July, Ironmouse returned for day 32 of the subathon. She opened the timer to donations for one more hour, raising the timer to over 59 hours. The subathon ended on 9 July.

On 13 July, Ironmouse was featured in the most popular Puerto Rican newspaper, El Nuevo Dia.

On 24 July, Ironmouse was nominated in the Streamy awards.

On 4 August, for her sixth anniversary, she released her new anime ONA Ironmouse Unleashed, as well as a new original song with Bubi, "anarchy," Her podcast with the Immune Deficiency Foundation, "Undiagnosed," was also released the same day.

On 27 August, Ironmouse took part in the first VShojo 3D concert, "Candy Pop Explosion". In this concert she revealed her new original song, Sour Taste.

On 28 August, Ironmouse debuted on QSMP.

On 27 September, she debuted her Season 3 outfit made by Rosuuri.

On 24 October, Ironmouse debuted her Yokai Hunter outfit. The concept art was done by epebe, the model art was done by y_k_sme and rigged by kvxart. She also released her mini lore video titled "Yokai Hunter Anime Opening" along side it.

On 12 November, Ironmouse reached 1 million YouTube subscribers, which she celebrated in a YouTube stream.

On 7 December, Ironmouse won the Content Creator of the Year in the Game Awards, being the first VTuber to be nominated and win such a award.

On 9 December, Ironmouse debuted her Christmas costume, done by henxtie and rigged by kvxart with a mini lore video titled "The Nutcracker and The Mouse Queen".

On 12 December, Ironmouse partnered with Razer, the first VTuber to do so. She was also interviewed by Tubefilter regarding the partnership.

On 18 December, The Messenger released an article about Ironmouse, where she and some of her fans were interviewed after her win in the Game Awards.

On 19 December, Ironmouse collabed with Youtooz to release a merchandise collection.

2024 On 1 January, Ironmouse released her Gloomy Bear merchandise collection.

On 11 January, for her birthday she debuted a new model by Nanoless. She also revealed a new intro animation and lore video by LordCalories.

On 13 January, Ironmouse appeared alongside Kson as special guest in the V4Mirai concert in Los Angeles.

On 18 January, Ironmouse was featured in the pop culture magazine Rolling Stone.

On 29 February, Ironmouse held her second 3D concert with the theme of "Attack of the Magic Cloud", where she also debuted her two new songs: "Devil (feat Bubi)" and "Rodent's Kingdom".

On 14 March, Ironmouse announced that she will appear as keynote speaker for PI conference at Sheraton Grand Chicago Riverwalk.

On 29 March, Ironmouse debuted her "Pudding" model. It is illustrated by Clickdraws, rigged by KevinX, and based on concept art by Epebe.

On 10 June, Ironmouse released a single, "carry on", in collaboration with the Immune Deficiency Foundation for their "Life Without Immunity" documentary.

On 11 June, Ironmouse opened auditions for a VR dance competition.

On 15 June, Ironmouse released a music video for her song "Devil" featuring Bubi.

On 26 June, Ironmouse reached 2 million Twitch followers, during a marathon Elden Ring stream which lasted over 60 hours.

On 4 July, Goodsmile announced the first Ironmouse Pop Up Parade figure.

On 4 August, Ironmouse celebrated her 7 year anniversary with a new Cult Princess model by 2twintails, and also teased a new music video in collaboration with dillongoo.

On 8 August, Ironmouse opened applications for her new weekly show "Ironmouse VTuber Academy" featuring RubberRoss. This show aims to convert streamer contestants into a VTuber, where the winner gets to choose a model of their liking to be made.

On 23 August, Ironmouse hosted the first episode of "VTuber Academy".

On 1 September, Ironmouse began another subathon, which would continue throughout the month.

On 8 September, YouTube deleted Ironmouse's VODs channel following DMCA takedown requests.

On 12 September, Ironmouse officially debuted the 2D version of her Ultimate Delinquent model.

On 16 September, Ironmouse's "Time to Feast" MV was released. The music video was animated by former RWBY artist DilllonGoo and his team.

On 20 September, her primary YouTube channel was terminated, possibly due to the deletion of her VODs channel. Ironmouse worked with her legal team in an attempt to restore the channel.

On 23 September, Ironmouse's VODs channel was restored. Her main YouTube channel was also restored a few minutes later. Later that day her VODs channel reached 100,000 subscribers.

On 24 September, still during the subathon, she exceeded her previous record of 205,488 Twitch subscribers.

On 30 September, she passed Ludwig as #2 all-time subscribed Twitch user, breaking his record of 283,066 Twitch subscribers. Ludwig himself contributed 200 gift subs. Around two hours later she reached #1 most subscribed Twitch streamer of all time, beating the record of 306,621 set by Kai Cenat in 2023. The milestone was reported in articles by Complex and Rolling Stone.

On 1 October, Ironmouse revealed her new "Witch of Twitch" Live2D model. The concept is by Neill Ayane, art by Kamochiruu, and rigging by Suiika. Ironmouse's subathon continued into October with just over 200 hours left on the clock, although no additional time was added after September. The event peaked with a record 326,252 subscribers.

On 10 October, Ironmouse's subathon finally ended on its 39th day. Mouse would later reveal that she suffered from illness during the last week of the subathon, and would take a break from streaming between 20 and 25 October to recover.

On 30, November Ironmouse collabed with Kai Cenat. Cenat had recently surpassed Ironmouse to reclaim the Twitch subscriber record.

On 7 December, Ironmouse performed a 3D concert at the Streamer Awards.

2025 On 11 January, Ironmouse celebrated her birthday with her new outfit debut and also appearing at Valkyrae's "Press ESC" podcast the same day.

On 13 April, Ironmouse was featured in Immune Deficiency Foundation website for her contribution.

On 1 May, Ironmouse advocated for CVID in U.S Federal Congress.

On 21 July, Ironmouse unexpectedly announced her departure from VShojo, alleging that the company had failed to pay her funds owed, as well as $515,000 in subathon donations to the Immune Deficiency Foundation. She continued her activities as an independent VTuber. Ironmouse's announcement followed the departure of several prominent VShojo talent and staff members earlier in the year, and was in turn followed by a mass resignation of the group's remaining VTubers.

In the wake of her announcement, Ironmouse also started a Tiltify campaign in aid of the Immune Deficiency Foundation, which was amplified by several creators in the VTuber sphere. The campaign raised $500,000 in less than 24 hours, and went on to raise over $1 million.

2026 On 19 July, it was announced she would be a captain in the musical project known as The Wildcard Club alongside AmaLee, Dokibird, and Rin Penrose.

Ironmouse born, January 11th 1997, current age is 29. Birth Sign Capricorn.

She jokes about her VTubers character age being 6,669 years old. Her fans are called Precious Family. She also loves anime and Hello kitty. Most importantly she adores Cinnamon Roll (not the food the character)