The Schwarzstrom(シュヴァルツ・シュトローム, Shuvarutsu Shutoroomu, "black storm") is a group of fictional characters within the Soul series of games. It consists of Nightmare, Astaroth, Aeon Calcos the Lizardman, and formerly Ivy.
- The group's name has an error in it, as "storm" would translate to "Sturm" in German, whereas the German "Strom" is equivalent to "stream". However, the Japanese translation of the name (黒い嵐 "Black Storm") indicates that it is supposed to be "Sturm" rather than "Strom".
- It can be considered as an evil counterpart of Siegfried’s Schwarzwind.