King's Quest: Adventures of Graham[]
Rosella is first mentioned offhandedly in Chapter 1 of the new series, and appears on a tapestry in Gwendolyn's room. The tapestry is a modified version of the KQ4 boxart made to look like a tapestry. Rosella rides on a white stallion horse while being chased by a Goon. Notice that it must be a horse as it is lacking the Unicorn's horn from the original boxart.
