Gowther

Without his armor, Gowther is shown to have amber eyes and dark pink hair (sometimes depicted as magenta) that reaches below his head. His usual attire consists of a long-sleeved, gray striped shirt under a white sleeveless blouse, as well as black pants and short boots. Gowther also wears a pair of glasses with light frames and apparently cannot see without them.

Who is it?
She is currently a member of the Seven Deadly Sins. Her sin is Lust, and her symbol is the Goat.
He has no heart; he is distant and shows no emotions. He needs to understand everything; he is very sincere and direct. He doesn't understand human emotions; he does what he thinks and says what he thinks.

Calm, stoic, and very capable of appreciating emotions despite her dialogue "it's as if she feels nothing"