To celebrate his 4th anniversary, on 24th July 2026, Axel Syrios from HOLOSTARS English has released an original song titled Bellator Ruber. Aside from YouTube, the song is also available on various music platforms, including Spotify, Apple Music, Amazon Music, TIDAL, Deezer, and iTunes Store. Debuting on 24 July 2022, Axel Syrios is a virtual YouTuber from HOLOSTARS English. As a YouTuber, Axel describes himself as a doctor, gladiator, and hitman assassin. Together with Regis Altare, Axel had a special 3D showcase in February 2024.