Hyperthermia

Hyperthermia, called Mer for short, is the one who's responsible for raising humans' body temperatures. She lives to wants everyone to know her name and that she has no relation to fever. The name Mer is her preference, she uses this alias since she realised that hyperthermia and hypothermia have very similar sounding pronunciations. Mer doesn't want to be confused with hypothermia or fever.

Hyperthermia has good relations with Hypothermia the person herself, not the condition itself.