What is "apep"

Apep ( or ) or Apophis (; ; also spelled Apepi or Aapep) was the ancient Egyptian deity who embodied chaos ( ı͗zft in Egyptian) and was thus the opponent of light and Ma'at (order/ truth). He appears in art as a giant serpent. His name is reconstructed by Egyptologists as *ʻAʼpāpī, as it was written ꜥꜣpp(y) and survived in later Coptic as Aphōph. Apep was first mentioned in the Eighth Dynasty, and he was honored in the names of the Fourteenth Dynasty king 'Apepi and of the Greater Hyksos king Apophis.