Indiscipline is an all-female heavy metal power trio from Rio de Janeiro, formed in 2014. The band released their debut EP "In My Guts" in 2014, followed by the full-length "Sanguinea" through Shinigami Records in April 2017, and the three-song digital EP "Psalms of Darkness" in 2019. Their lineup features Alice D'Moura on vocals and bass and Maria Fernanda Cals on guitar.

Insanecide was a heavy metal and hard rock trio from Volta Redonda, Rio de Janeiro, Brazil, active from 2013 until their split-up. The band combined the rhythmic weight of groove metal with melodic hard rock sensibilities, drawing comparisons to Pantera, and released the four-track EP Counter alongside a music video for the track "The Rift."

Isa Nielsen is a Danish-Brazilian heavy metal guitarist and vocalist based in São Paulo who began performing at age 13 and has built a career spanning major Brazilian stages. She has performed at Rock in Rio and opened for Tom Morello and John 5 at the Best of Blues and Rock festival before audiences of over 40,000, and has jammed live with Steve Vai. Her debut album "Break the Chains" showcases her dual role as a lead guitarist and vocalist in the classic heavy metal and hard rock tradition.