mori, the stage name of Martín Moreno Rivera, is one of the founding figures of rusia-idk. Emerging from Spain's bedroom pop scene with the 2019 single q no, he became the collective's original frontman, touring alongside rusowsky during its formative years.
Together with TRISTÁN!, he forms the creative duo FOMOTRAUMA, responsible for the visual direction and music videos of artists including Ralphie Choo, AMORE and bb trickz.
At the end of 2025, he returned after several years away from the spotlight with the double single Lovers to Strangers / DANCE, marking his evolution towards a new lo-fi crooner sound. His comeback was covered by British publications including Clash Magazine and The Line of Best Fit.
In February 2026, mori released his debut album El Niño Bola, a sixteen-track record produced by Roy Borland, featuring the collaboration I Feel Good with AMORE.