Mario Sandoval Leon (born February 28, 1999), better known by his stage name Mástein Bennett, is a Mexican hip-hop recording artist, songwriter, record producer and actor from Los Mochis, Sinaloa. After years of releasing music for free on the internet, Bennett emerged on the music scene officially in 2018, when he co-founded RYRNA Records before releasing his debut project "ME" in May and "Per Sé" in late December of the same year. In mid-2019, he became a part of the Latin American Hip-Hop collective Black Future, where he produced for different artists from the crew, creating and innovating his own sound based on synths and samples accompanied by panned percussions and distorted vocals, without realizing, he was implementing a new sound in the northern coast of Sinaloa, being that his production signature.