In the first game, she is taken by the dragon Singe and imprisoned in a crystal orb. According to the manual of the 8-bit version, Singe commanded Ethelred to surrender his kingdom before sunset. Daphne appears in the final level of the game, giving Dirk directions to use the magic sword and slay the dragon.
In the TV series her character and role are far more developed. Despite her beauty, she is an adventurous character, often eager to abandon her royal pose and joins Dirk and Timothy in their adventures. Also, her attire is less revealing, wearing a proper princess dress.
At the start of the game, 10 years have passed after her adventure with Singe. Daphne and Dirk are married and have over a dozen children. However she is again captured, this time by the evil wizard Mordroc, who wants to enslave her with the Death Ring. At the end of the game, the Ring transforms her from a beautiful princess into an ugly monster, but Dirk saves her by removing it from her finger. She then falls into a coma, but Dirk cures her with a kiss.