Hakos Baelz

Who is Hakos Baelz?

Hakos Baelz is an English-language VTuber and singer produced by hololive production, part of COVER Corporation. She debuted on August 23, 2021 and bills herself as the "worldwide Rat Idol," an embodiment of chaos and mayhem expressed through a playful, high-energy persona.

Her official profile lists a February 29 birthday, an illustrator credit to Mika Pikazo, and a fan name of "Brats." Hakos performs across hololive music releases, livestreams, and official hololive events and concerts.

Creator and studio

Hakos Baelz is managed by hololive production, the talent division operated by COVER Corporation. Her official talent page and music releases are published through hololive production and COVER Corporation channels.

Hakos Baelz Visual Style and Aesthetics

Visually she appears as a mouse-like, idol-styled character with a wide, mischievous smile and playful wardrobe choices that blend idol and street elements. Her look and character art are credited to illustrator Mika Pikazo.

Her branding leans into chaotic, colorful motifs and stage-ready imagery used in music videos, concert visuals, and promotional art. Official hashtags and stream tags reinforce a lively, fan-driven aesthetic.

Content Type & Format

Hakos Baelz produces livestreams on YouTube where she plays games, chats with viewers, and hosts variety broadcasts. Her livestreams often mix high-energy banter with music segments and occasional collaborative streams with other hololive talents.

She releases music and music videos as part of hololive music projects and solo singles, including original songs and album tracks. Hakos Baelz's content includes official MVs, digital singles, and album releases distributed through music platforms and hololive channels.

Beyond live shows and music videos, Hakos Baelz appears in hololive concerts and special 3D performances, and she shares short-form and promotional content on social platforms. Hakos Baelz's personality drives her formats: energetic singing, playful chaos in streams, and highly visual music media tailored for YouTube, X, and official hololive outlets.

Hakos Baelz Collaborations and Campaigns

ZODIAC Album Release: hololive production x Hakos Baelz. 2024. Hakos released her first concept album ZODIAC, a zodiac-themed 13-track release featuring collaborations with other hololive talents and available as CD and on digital streaming platforms. The project combined original songs, music videos, and physical merchandise to showcase her musical identity.

Rift of the NecroDancer DLC — "Play Dice!": Brace Yourself Games x Hakos Baelz. 2025. "Play Dice!", Hakos’s early original single, was included in a hololive music pack for Rift of the NecroDancer as a downloadable Rhythm Rift level. The collaboration packaged her track as in-game content with a visualizer and multiple difficulty levels, extending her music into an interactive game format.

Rebel Engine Music Video: Seven Leaf Clover x Hakos Baelz. 2025. COVER Corporation announced a music video collaboration tying Hakos Baelz’s vocals to the action game Rebel Engine, releasing a promotional MV and linking the track to a playable demo during Steam Next Fest. The campaign presented her song alongside game footage and promotional clips to reach both gaming and VTuber audiences.

Persona, Audience and Public Presence

Hakos projects an anarchic but fun-loving persona that emphasizes freedom, playfulness, and performance. She frequently highlights interests such as coffee, fried cheese, and upbeat music styles, which shape the tone of her streams and songs.

Her primary audience consists of international hololive fans who enjoy idol-style music, energetic variety streaming, and crossovers between gaming and music. Official releases, concert appearances, and participation in cross-media projects position her for collaborations with music and game partners.