Regular enemies are usually members of a , reflected in the second part of their names (for example, Young Grexes are members of the Grex family). Exceptions to this rule are the more powerful Tyrants that all have unique names (for example, Volkampf, the Pursuer), Nemeses (for example, the Telethia Plume) and Bosses (for example, the Origin Blatta or Goetia). The Enemy Index tracks most opponents encountered.