Red ichor is an artificial variant of Terrazine. Black and crimson red in color, its origin is unknown. Protoss legend states it is made from failed Xel'Naga experiments dissolved into liquid essence (Prometheus: [[w:c:avp:Chemical_A0-3959X.91_%E2%80%93_15|Black liquid]]). Though impossible to prove, the Judicator caste has forbidden its use and ordered all existing supplies be destroyed. Nearly every Tribe has complied with these orders including the Dark Templar. The only ones who have not are said to be of a rogue faction worshiping a false shadow.