macht_(sousou_no_frieren)
Macht, also known as Macht of El Dorado, is one of the Seven Sages of Destruction and considered the most dangerous one of them. He made a deal with Glück about a hundred years ago to set up an experiment to understand humans and started to serve him as the family's mage. He was also Denken (sousou no frieren)'s childhood mentor under Glück's order.