There are multiple artists named Ruim.
1) Ruïm is a black metal band from Portugal, formed by Rune Eriksen (Blasphemer), former guitarist of Mayhem, in 2020. They released their first album, Black Royal Spiritism – 1 - O Sino da Igreja in 2023.

2) A punk rock band from Fortaleza, Brazil. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.