Alisaie is strong-willed, cynical and, at times, emotional. She is compassionate, concerned for a traumatized koboldling that lost his parents, and leaving a bouquet of flowers in memory of her grandfather, Nael van Darnus, and Bahamut's children.

By her own admission, Alphinaud was always the more clever of the two while she is more direct. This distinction being most pronounced when she summons an aetherial blade to attack the Warriors of Darkness, rather than summoning a carbuncle like her brother.

Unlike her brother, Alisaie had little interest in the affairs of the city-state's politics, finding their petty political power struggles tiresome. She strikes out on her own while her brother becomes a part of the Scions of the Seventh Dawn, but upon reuniting becomes more involved with the Scions, especially with the missions to liberate Doma and Ala Mhigo.

She has a humorous side, often teasing Alphinaud and make cynical comments on his actions. Although this seems like petty sibling rivalry, it shows that she knows and understands Alphinaud unlike anyone else. However, Alisaie resents being compared to her brother or being mistaken for a boy.