Erubetie

Erubetie is one of the Four Heavenly Knights. As the Queen of the Slimes, Erubetie is embittered over humanity’s pollution of water, drastically reducing the slime population and possible areas to live in the process. Under most circumstances she portrays herself as calm and stoic, though when angered she acts with fervor and can be irrational. Furthermore, she is a recluse and a loner and often keeps to herself, as she did not appear in Chapter 1 (having “shut herself” in Undine's Spring). Despite her reclusive nature she is Undine's closest friend.