Erubetie moves in front of me next. the queen slime who hates humans for destroying her race's habitat... Erubetie says I'm different from tamamo and alma elma. there will be no foolish attempt at training you. nor will I be a fool and try to do anything less than crush you. I'll never go easy on one of you intruding humans. you humans, who have causes so such harm to us slimes, are unforgivable. I'll wrap all the humans in my body and melt them away... starting with you. Erubetie is one of the Four Heavenly Knights in Monster Girl Quest. She is a collective consciousness of approximately ten thousand women whom she has absorbed throughout her life, pulled together by one iron will. She is the Heavenly Knight of Water.

As a master manipulator of water, she can expand her own body to create highly damaging whirlpools, regenerate her own body, divide into countless clones, shape, and mold melee weapons (such as changing her hand into a spear), or even transform herself into a nuclear bomb as a last ditch effort, and is also capable of using the ultimate defensive water time-space technique Aqua Pentagon. She is extremely notorious for her high damage output capabilities, such as her Melt Storm attack which does a whopping damage of 1,500 which will one-shot Luka (in both battles, if he does not have the proper guarding tools) with no indication prior to its use. However, unlike Luka nor Granberia, Erubetie is never shown using water for evasive purposes. Although she has not displayed it, Erubetie is possibly capable of teleportation but has displayed telepathy, like the other Heavenly Knights and Alice. For most of the game, Erubetie is embittered over humanity’s pollution of water, drastically reducing the slime population and possible areas to live in the process, and it was, for this reason, that she coveted the title of Monster Lord to take vengeance on humans. She will kill them without mercy, sense, or thought. Erubetie despises them so much that she even attempted to kill Luka