Sylphie is best known as the shopkeeper who sold items, weapons, armor and even hints on how to defeat the stage bosses to the two unnamed super soldiers in Forgotten Worlds. Sylphie's shop is found in certain locations in each stage, and once entered, the player has a limited amount of time to purchase goods. Along with the two nameless warriors, Sylphie also fought alongside Reiji, Xiaomu and the others in Namco x Capcom while still taking the time to occasionally do business with the party, albeit in her own shrewd way. Many of her attacks and her finishing move are lifted from other Capcom titles, such as Pirate Ship Higemaru and the Alien vs. Predator arcade game.