Born Brian John Baloyi, Ultimatum is a songwriter and music producer, identifiable with his heavily Auto-Tuned half-sung/half-rapped vocal style. He was initially inspired by 50 Cent to make music then later studied works by 2Pac developing a strong passion for music, and in later years he began producing music heavily influenced by the production of Kanye West, Metro Boomin, Mustard & Tm88. Ultimatum has produced music for other artists like Aqua Rose and many more. Ultimatum has stated that currently, his biggest musical influences are artists like Drake, Kanye West, J. Cole, Travis Scott, 6LACK, Bryson Tiller, and Lil Uzi Vert, these are the artists that influenced his sound the most, and aspires to work with. His music is also influenced by his love for anime which plays a huge role in his persona. Ultimatum is signed to the label Matum Legacy Entertainment, which is founded and ran by him. Matum Legacy Entertainment was founded in 2018 and has since been releasing Ultimatum's music independently to the world and still continues to release his music to this day.