Bear with us for a moment ... this will get weirder before it gets easier. Gowther, the Goat's Sin of Lust, and formerly of The Ten Commandments (a rival faction of "knights" to the Seven Deadly Sins) is a sentient doll, created by a once powerful old wizard to appear in the form of his dead lover, Glariza. Not wishing to feel romantic inclinations towards his invention, the old wizard placed her features on a male figure. These androgynous origins, his even more androgynous fashion decisions, and his distinct personality led to a creation that is wholly unique and, at times, baffling to the other characters.
Because he's an actual, literal doll, Gowther is emotionless and struggles to understand the reasoning behind most human actions. He often accidentally harms those around him during his efforts to comprehend human emotion and personal expression. His efforts take the form of experiments, which are all the more dangerous because of his abilities, which feel somehow perfectly designed for torture.