TeddyLoid's career first began by publishing remixes on MySpace, where he gained popularity and climbed to the top of the platform's electronic indie chart.[3] In 2008, he toured internationally as Miyavi's background DJ in the guitarist's "This Iz The Japanese Kabuki Rock Tour 2008".[3][4]
TeddyLoid's first partnership with Taku Takahashi came when Takahashi created his record label, TCY Records. In the record label's debut album, TCY Recordings Sampler Vol.0, TeddyLoid produced the song "Another Day".[5] The two then worked together on the soundtrack for the anime series Panty & Stocking with Garterbelt, with TeddyLoid producing multiple songs.[6] The soundtrack album, Panty & Stocking with Garterbelt The Original Soundtrack, reached 10th on the Oricon Albums Chart,[7] while its follow-up album Panty & Stocking with Garterbelt The Worst Album also reached 24th.[8] In 2011, he formed Galaxias! along with vocalist Ko Shibasaki and music producer Deco*27.[4] The three produced one album titled Galaxias! and toured Japan, including a concert at Nippon Budokan.[9]
On 17 September 2014, TeddyLoid released his debut album, Black Moon Rising.[10] Then, for the 2014 Japan Animator Expo, TeddyLoid produced the music for an anime music video "ME!ME!ME!", which was visualized by Hibiki Yoshizaki from Studio Khara and vocals sang by Daoko. The music was written in three parts, and the video, notable for its sexual violence content, featured a male protagonist in a surreal-psychedelic setting while surrounded by nude women, which becomes a viral hit over 100 million views on YouTube.[11][12] A follow-up remix titled "Me!Me!Me! Chronic" was released in May 2015.[13] In 2015, TeddyLoid partnered with Momoiro Clover Z and released Re:Momoiro Clover Z, which featured remixes of the idol group's songs.[14][15] He then released Silent Planet later the same year and began releasing a series of follow-up extended plays under the same title. Each release featured different artists including Kohh, Bonjour Suzuki, Chanmina, Aina the End, and IA. The series then cumulated in two albums, Silent Planet: Reloaded and Silent Planet: Infinity.[16][17][18]
In 2016, TeddyLoid was the fifth most-listened-to Japanese artist outside of Japan on Spotify.[19] In 2018, he worked with virtual YouTuber Kizuna AI to produce the single "melty world", which he later remixed himself in 2020 to create a "black" version of the title to sound like it was sung by Kizuna AI's cynical alternate ego, Kizuna AI Black. February 17, 2018, TeddyLoid made his first American performance in Milwaukee, Wisconsin as a DJ for a concert at Anime Milwaukee.[20]
In 2021, he collaborated with fellow DJ/Music Producer, Giga. Their first major song together was "Odo", a single for Ado. Their other collaborations include "KIKIKAIKAI" (feat. Yuzu), "Let's End the World" (feat. Mori Calliope), "Desperate" (feat. LOLUET), "Show" (feat. Ado), "Let Me Battle" (feat. 9Lana), "Go-Getters" (feat. Mori Calliope), "ULTRA C" (feat. Kagamine Rin & Len), and "Pikaaan!" (feat. Rina Matsuda & Hikaru Morita of Sakurazaka46).
In 2022, he made his debut in the rhythm game Arcaea with the song "Defection", with DELTA on vocals for the pack Final Verdict. In 2024, he released "Gimme Dat" on Tokyo Machine's label CHOMPO.