リトス

A rare alchemist for an elf. 
Rather than the prosperity of his species, she acts with the idea that he wants to spread the tools she invented to the world. 
She has a reaction to the pursuit of knowledge and a peculiar way of speaking, and communication often does not go well.

hates incompetence. 
She also looks down on humans who are similar in appearance but cannot use magic, and thinks of them as little more than experimental materials for research.

She is also the person behind the development of the "collar", which grants the wearer the right to be commanded and controlled.