As an experienced gambler, Celestia appears collected, cold, and cunning by nature. She possesses the ability to manipulate others to do her bidding and can lie with a straight face. She is shown to be fairly intelligent. She is a very ambitious person, as she declared that she will do anything it takes to win. She is extremely selfish and values her life over the lives of others, stating she has no problem sacrificing others in order to save herself. She also has a lot of pride, refusing to surrender no matter how far into a corner she's pushed, as long as the chance for victory remains. However, when confronted with complete defeat, Celestia preferred to surrender gracefully over dragging out the inevitable. She believes in adaptability to be the key to survival, rather than strength or intellect.

Celestia is shown to be relatively materialistic, with her life's dream being living a life of luxury and decadence in a European castle. Her mannerisms are strict, refined and her spoiled nature emphasizes this due to her aspiring to be like European royalty. She even has a habit of ranking men between Rank A and Rank F, supposedly to test who is worthy of being one of her servants. She despises her real self as she dislikes ordinary and common things and considers her real identity and name to be one of "a loser". Celestia speaks softly and smiles often in order to imitate Victorian mannerisms and etiquette as a lady. She usually uses polite language whenever she talks to the others, but her short-temperedness surfaces when something fails to go as well as she expects it to.

As the Queen of Liars, Celestia claimed that she can even fool her own emotions, but this doesn't seem to be entirely the case. She appears to lack empathy and claims that she feels no guilt for the nefarious acts she committed in the gambling underworld, although like most things regarding her, the truth of this is in question. She has a habit of deceiving her own emotions and so even in defeat always keeps a constant poise.

If you could sound similar to her English VA, Lindsay Seidel, that would be great, but it is not required!

I don't have any English VA examples as there is not many I can find on Youtube, so if you could try and match the dub voice, it would be great, but again, it is not necessary.