Flounder and Sebastian join Disney Dreamlight Valley as Adventure Companions exclusive to paid DLC editions of The Keepsake Sea expansion.
Both characters unlock only through purchasing the Deluxe Edition ($49.99) or Ultimate Edition ($79.99) of The Keepsake Sea. The Deluxe Edition includes the expansion pass, both characters as Adventure Companions, the Merfolk Mansion house style, Gilded Shell Tops, and 10,000 Moonstones. The Ultimate Edition includes the base game, both expansion passes, the Merfolk Mansion style, Gilded Shell Tops, and 18,000 Moonstones.
Players will likely need to unlock Ariel first and progress through The Keepsake Sea's storyline before accessing additional quests to unlock Flounder and Sebastian, though full unlock requirements are not yet available.
Unlike full villagers, Adventure Companions can receive gifts and have daily conversations but offer less depth than standard village characters. The report states these exclusives will "very likely only ever be available" through special edition purchases. Disney Dreamlight Valley has maintained this exclusivity model for years across past DLC releases, with items like Sven never becoming available through other means.