Missi Zilla is a giggling, power-hungry, and single-minded predator who kills and torments anything that crosses her path and is seemingly devoid of any desires beyond gaining more power and spreading death and carnage. She serves as a representation of what demons were like in Hell's olden days. She was shown to be vile and heartless enough that she willingly sold her very existence and soul to Lucifer all for the sake of gaining power.