Leetspeak monsters is a visually striking Japanese mixture rock band that has been associated with GLK MUSIC since 2017. The members are D13, Yo'shmeer, Euskyss, and DieWolf. They bring a unique concept to their music, portraying themselves as monsters from the fictional Gravetown—characters like a skeleton, a Frankenstein creature, a vampire, and a werewolf, engaging in the human world through their music. The band’s music is a fusion of black music rhythms like hip-hop and funk, combined with cinematic and gothic elements, creating a unique mixture rock style that includes rap. This eclectic mix makes their performances reminiscent of theme park attractions or musicals, complete with a well-crafted thematic presence that stands out even within the visual kei scene. In their evolving journey, they've also covered iconic tracks like "This is Halloween" from Tim Burton’s The Nightmare Before Christmas, and contributed to projects like Hypnosis Mic, enhancing their visibility and influence across diverse music and cultural spectrums. Their song "Room 666"(2024) adds to their discography that skillfully blends various music genres with their thematic approach, capturing their unique artistic vision.