|Previous Occupation||Prime Minister of Elfrieden|
|Light Novel||Volume 01|
Marx (マルクス, Marukusu) is a recurring character of Genjitsu Shugi Yuusha no Oukoku Saikenki series. He was the former Prime Minister of the Elfrieden Kingdom before being replaced by Hakuya Kwonmin and now serves as the chamberlain for the former rulers, Albert Elfrieden and Elisha Elfrieden.
Marx has pointed ears, due to his half-elf lineage and appears to be an elderly man with a mustache.
Marx is described as an even-tempered person, though is quite anxious to see the Royal Family lineage continue.
Marx is seen during the summoning of Kazuya Souma and took part in the counsel between Souma and Elfrieden's king. He made available all of the kingdom's treasury statements, economic reports and government revenues. Like everyone else, he was quite surprised when Albert ceded the throne to the newly-summoned hero. He would later give up his position as Elfrieden's Prime Minister once Hakuya Kwonmin took up the role, though he will take up the position again if Hakuya is busy with other matters.Marx had since been pressing Kazuya to quickly produce an heir with one of his Queen Consorts, and ensure that the Royal Family carried on. He was quite excited when he learned that Princess Liscia Elfrieden had become pregnant with Kazuya's child and swiftly began preparing a nursery.