Desiree is a genie-like ghost and recurring antagonist in the animated series Danny Phantom. In her human life centuries ago, she was a harem girl of Arabic descent who captured the heart of a powerful sultan. He promised to grant her every desire, including her own kingdom. However, the sultan's jealous wife banished her from the palace, and she eventually died of a broken heart and old age. Her restless spirit then transformed into a spectral genie, forever compelled to grant the wishes of others while deliberately twisting them into malicious and destructive outcomes that increase her own power with each wish fulfilled. She made her first appearance in the Season 1 episode "What You Want," emerging from an enchanted bottle after it shattered at an Amity Park swap meet.

In her debut, Desiree immediately sensed the jealousy of Danny Phantom's friend Tucker Foley and granted his wish for ghost powers identical to Danny's, causing his abilities to spiral out of control and nearly corrupt him while wreaking havoc across the town. Danny confronted her in a direct battle and ultimately defeated the wish-granting specter by exploiting her compulsion to grant any heard wish, commanding her back into the bottle and temporarily containing the threat. Desiree returned as the central antagonist in the Season 2 episode "Memory Blank," where she capitalized on a meteor shower that encouraged widespread wishing and granted Sam Manson's impulsive desire that she had never met Danny, resulting in a drastically altered reality in which ghosts overran Amity Park and Danny lost his powers until the wish was reversed.

Although primarily antagonistic, Desiree appeared in several subsequent episodes as a supporting figure amid larger conflicts. She was briefly seen among the ghosts imprisoned by Walker in "Prisoners of Love," assisting Danny and Skulker in an escape. Additional cameos occurred in "Reign Storm" and "The Fright Before Christmas," where she participated in events aligned temporarily with heroic efforts during a Christmas truce. In the series finale "Phantom Planet," she was first attacked by Masters' Blasters before joining other ghosts to aid Danny in the climactic battle against a global threat. Her character arc reflects deep-seated resentment rooted in her tragic past, manifesting as a vindictive force that perverts human desires while remaining bound by the inescapable rules of her ghostly existence.