Raynesia

Raynesia (called Lenessia in the anime) is a member of clan Corwen, the most prestigious clan in the East. She later becomes the Ambassadress of the League of Freedom Cities Eastal to the Round Table Alliance in Akihabara

Female nobles don't have any real authority and instead exist for political marriages. This is the reason why she is so lazy and unmotivated, because she knows that she will never be in a position to do anything worthwhile and her only is role is to just look pretty and perfect.

Appearance
Raynesia is well-known for her beauty, although that tends to irk her because she is aware of her position, which essentially required her to look pretty and nothing else. Her attire is left up to her personal maid, Elissa, while Raynesia herself prefers to wear comfortable pajamas.

Personality
Her personality is laid-back, gloomy, and lazy to the core. She would prefer to do nothing except eating, daydreaming, and napping for the entire day. She also dislikes taking showers. Nonetheless, being raised in a royal family, she knows how to act properly in society.

Whenever she daydreams in the public, due to her beauty, people misinterpret her behavior as being concerned about the future, and thus she has the nickname "cultured lady with a sense of sorrow." She only acts as herself in front of Krusty, who she realizes can see right through her facade. Thus, there's no point in putting on an act in front of him.

Given all of her shortcomings, she can be quite bold and straight to the point when a problem must be solved. For instance, when an army of 20,000 Goblins began invading cities, she voluntarily traveled to Akihabara to ask for aid from Adventurers while most nobles were still bickering among themselves about how best to exploit the Round Table Alliance to their advantage.

Palace of Eternal Ice Arc
Raynesia and Elissa appear before Duke Sergead Corwen when the spies in Akiba return

Return of the Goblin King Arc
Raynesia was told by her father to stay at the Ancient Palace of Eternal Ice with her Grandfather. However, due to the bickering among the nobles on how to use the Adventurers to their advantage, she defies her father's commands and goes to personally plead for the Adventurer's assistance against the goblin hordes. Her outlook on societal classes was completely turned upside-down as she witnessed how well-educated the Adventurers were, in comparison to the military officers and nobility of the People of the Land. Her impassioned speech to the crowds, later convinces Krusty and the other Adventurers to lend their aid.

Libra Festival Arc
Because she acted entirely on her own without the authority of the Nobles, she found herself forced to shoulder all responsibility, and had to go to Akihabara to become the Lander ambassador to the Adventurers. Ironically, Krusty tells her that since Adventurers don't care about politics, she gets to just laze around all day long, exactly what she wanted much to her happiness.

When she shortly realizes that she's now swamped with requests between the Guilds and Landers and now barely even has time for herself. She feels that she got conned by Krusty as a result.