Eagle Union's Light Cruiser nicknamed "Lucky Lou." She speaks with conviction, which comes from the power she holds, and her mature aura gathers the attention of even her peers. She is the older sister to Helena, and though they seem like opposites, they both know how to approach others with kindness, which reminds everyone of their sisterly bond. Among the many that Eagle Union sent to the event, she is one of the few who actively supports her friends.
Before the event begins, St. Louis befriends a member of Dragon Empery. Hammann makes a dramatic entry, causing quite a stir, but St. Louis is quick to show how a lady handles such a situation.