The band is composed of its founding member and vocalist Tomas Pettersson, and Rose-Marie Larsen, who replaced Chelsea Krook on backup vocals.

In its strident, contemplative, or sombre lyrics, Ordo Rosarius Equilibrio combines seemingly incompatible polarities, such as "creation and destruction, dark and light, joy and sorrow, sex and war".

[4] The ontology of the pair could be accurately characterised as philosophically Luciferian or Epicurean (often incorporating Christian/Catholic, or Thelemic themes but permuted idiosyncratically).

For example, the album Cocktails, Carnage, Crucifixion and Pornography used the initials CCCP -- Latin characters that appear identical to the abbreviation in Cyrillic for the former Soviet Union—but modified [in the band's analysis of 2003] to indicate what Russia was becoming known for at that time (according to interviews from that period).

[6] A wide range of instruments are used, including acoustic guitars, percussion and piano, together with various sound-aggregating devices combined with projected imagery.