Xavier Lopez (born October 23, 2003), known professionally as Xaviersobased (stylized in lowercase), is an American rapper and record producer known for his eccentric rapping and production style. He is credited alongside his collective 1c34 with pioneering the jerk microgenre.
Lopez began releasing music as Xaviersobased in 2016. He later joined the online rap collectives Novagang and Jewelxxet. In 2022, he gained popularity online with the song "Patchmade" produced by kashpaint. The song was described by British magazine The Face as a "jerk anthem". In 2024, he released the mixtape Keep It Goin Xav, as well as the singles "40" and "Impact" with rapper Nettspend.
In 2025, he signed to Atlantic Records and released the EP Once More, which was followed by the "Riverside" American tour. In 2026, he launched the "Riverside tour 2.0" in Europe and released his self-titled debut album Xavier.
Lopez was born on October 23, 2003 in New York City, on the Upper West Side of Manhattan. He is ethnically Dominican. His mother began working as a DJ in the 1980s. From an early age, Lopez's brother, known professionally as Nurse, introduced him to skateboarding along with artists such as Odd Future and ASAP Rocky. When he was 10 years old, the YouTube algorithm recommended the music video for Yung Lean's 2013 single "Hurt", leading him to discover artists such as Lil B, Bladee's Drain Gang and Black Kray's Goth Money Records. Lopez has also cited Chief Keef, Hi-C's Reptilian Club Boyz and Duwap Kaine as early musical inspirations.
Lopez's first song under the moniker Xaviersobased was released June 8, 2016. The name was inspired by American rapper Lil B's "based" rap style. He later became a member of online rap collectives such as Novagang and Jewelxxet. Lopez is the founder of the collective 1c34. On July 20th, 2022, he released the mixtape Install, which featured the song "Patchmade" produced by kashpaint. The song would later garner traction online. Lopez and his collective 1c34 are credited with spearheading and pioneering the 2020s microgenre "jerk".
On January 11, 2024, he released a single titled "40" with Surf Gang producer Evilgiane and fellow rapper Nettspend. Which was followed by, Lopez appearing as a guest on the popular online radio show On The Radar, in which he performed a freestyle over an instrumental courtesy of DJ Ess. This freestyle was later released as the track "Special". On January 16, he released a 15-track mixtape called Keep It Goin Xav, hosted by DJ Rennessy, featuring guest appearances from rappers such as Nettspend, Yhapojj, Jtxpo & Kuru. In his review of Keep It Goin Xav, Alphonse Pierre of Pitchfork wrote that despite drawing from various influences, Xaviersobased's style retains a strong New York rap identity, distinguishing him in the generally "amorphous" internet rap scene. He described the music as "vibrant, improvisatory, and fun as hell", while being relatively inaccessible with respect to vocals which are heavily layered and sometimes pitch-shifted. He further praised the selection of faster tracks, while remarking that the slower ones are less interesting, but not devoid of subtlety. Lopez has stated that he never "played into" TikTok algorithms to find success.
Lopez released his second mixtape of 2024, with 2, on June 5. The album, partially unfinished, was hastily released upon it being completely leaked one week earlier. In a review for Pitchfork, Kieran Press-Reynolds noted that as Lopez's peers tend to dilute their sound to appeal to a broader audience, "itâÂÂs sweet to watch someone who doesnâÂÂt give a fuck."
On March 18, 2025, "Impact," a song by Nettspend featuring Xaviersobased, was released on all streaming platforms. This was followed by, Nettspend's American Invert tour, which was also joined by Xaviersobased. On April 28, 2025, Xaviersobased released a collaborative EP titled #BASEDSLiME with rapper OsamaSon, hosted by DJ Rennessy.
On August 1, 2025 Lopez released the EP Once More.
On October 26, 2025, Lopez and Che would appear on stage to perform their viral track, "MANNEQUIN" off of Rest in Bass at Yeat's set during ComplexCon 2025 in Las Vegas, saying quote "we made it, I feel like Xander Allison." Lopez and Che, along with PlaqueBoyMax would record a song together, titled "MOTTO".
Xavier announced the Riverside tour in late 2025 which focused on American dates. On January 15, 2026, he announced Riverside 2.0 which focused on a European tour from March to April.
On January 30, 2026, Lopez released his debut studio album titled Xavier, with 20 tracks along with the streaming bonus track, "Party At My Place".