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Roselinen is a Pillow Person who appears in "Puhoy." She is the daughter of Quilton, the mayor of Pillow World. Roselinen and Finn met at the celebration of the Blanket Dragon's death. She and Finn later got married and had two children, Jay & Bonnie.
- In the TV series, Roselinen is voiced by Mandy Siegfried, who returns to voice her in the game.