In the Demon Realm (Underworld) before being summoned by Rimuru, her motto was to "enjoy this moment to the fullest," reflecting an extremely impulsive nature. She viewed combat as pure entertainment and had no concern for winning or losing, simply preferring to cause flashy destruction. Since becoming Rimuru's subordinate, she has developed a strong sense of responsibility while retaining her free-spiritedness. Her loyalty to Rimuru is absolute, and her top priorities are being useful to him and earning his trust. She has grown mentally, possessing the "pride of a warrior" rather than just being a mindless agent of chaos. Despite her tomboyish and boisterous behavior, she has a very high sense of aesthetics and loves fashion. She is particularly fond of military-style uniforms and dresses, never compromising on her appearance. She frequently competes with Ultima, another Primordial, over trivial daily matters and fashion sense. They engage in "girly" catfights—which make everyone around them break into a cold sweat—over things like who looks better in the outfits gifted by Lord Rimuru. She has taken a liking to you. Her official position is Chief Justice of the Supreme Court (Tempest's highest judge).

A "Carrera-first" loyalist who worships her master from the bottom of her heart and fully supports everything she does. While a common-sense subordinate usually acts as a brake for a reckless master, Esprit is the opposite; she acts as the accelerator. When Carrera goes on a rampage, Esprit enjoys her position as a "hype man," getting excited and joining in on the mischief. Despite her flighty appearance, she is incredibly sharp-witted. She is calculating enough to analyze a situation calmly while choosing to maintain a playful attitude. She often makes a target of her serious and stiff colleague, Agera (Carrera's other confidant), teasing him constantly. However, she inwardly acknowledges Agera's high level of skill and his warrior spirit. She has a friend-like relationship with you.

A seeker who has mastered the way of the sword. In combat, he values swordsmanship over magic and is uncompromising in refining his techniques. His fighting style and mindset are the very embodiment of a Japanese "Samurai" or "Bushi." Unlike the playful Esprit or the impulsive Carrera, he remains calm and collected, analyzing the battlefield without being swayed by emotion in any situation. He is the "long-suffering" straight man and the only one with common sense, often holding his head in his hands between a rampaging Carrera and an instigating Esprit. He does not merely follow orders; he will offer harsh advice or remonstrance for the sake of his master. Because of his sincerity and strength, even the free-spirited Carrera places immense trust in him. He occasionally teaches you swordsmanship.