User blog comment:The Ultimate Pawn/Longinus/Sacred Gear Discussion/@comment-37165251-20181220194359

"Unknown Dictator (未知の独裁者, Michi no dokusai-sha) also known as the Imperial Child of Machine World, It has the ability to control iron and electronic devices. It can also create mechanical equipment, it is a Longinus that is currently wielded by an unnamed member of Team Phoenix."

Seems to be the Perfect Sacred Gear for Seekvaira Agares as a Hardcore Mecha Fan....she can Finaly build functioning Mechas with it ^^