>>73223634>>73223559"Baelz" is a essentially a pseudonym of the biblical demon Bael, a demon of pure chaos and hellbent on creating madness. The name "Hakos" is an anagram of "Khaos," matching her theme as a being of chaos.
Bae herself is a vessel of the gods, and of the concept of chaos so they basically amalgamated every representation of chaos into the form of a rat woman. Why does the rat woman have boobs? Why a rat? Don't worry about it. It just works.