Ivanna "Ivy" De Vil is Cruella De Vil's niece and the granddaughter of Malevola De Vil from 101 Dalmatians: The Series. She has two personalities: one is a cute, sweet, innocent girl; the other is an evil, deceptive, conniving girl. She is voiced by Rachel Crane. She is also the younger sister of Jackson De Vil and daughter of Bella and Carlos De Vil.
Ivy De Vil pretends to be a sweet, kind, thoughtful and caring child (this even made the Dearly Family question how she could possibly be related to someone like Cruella by blood); though it doesn't take long for the Dearly Dalmatians to discover that her personality was just a ploy and that she exploits her kind persona in order to deceive those around her into believing she's purely innocent. Ivy tends to work for her relatives in order to help them achieve an objective, in which she uses her innocence as a means of getting past most people's suspicion; though Ivy also likes to use her innocent nature as a means of placing the blame for an action on somebody else, even if it doesn't seem logical that they could have been responsible for the transgression.
While Ivy is initially subservient to her relatives, she gradually becomes more and more dominant and it doesn't take long before she starts bossing Cruella around, though Ivy's appearances in the series are rather infrequent. In order to make her innocence seem more believing, Ivy tends to speak in a very soft and polite tone, though she also walks around with a toy stroller, along with various other toys; though the stroller and toys are actually highly advanced technological equipment that Ivy uses to send information to Cruella, and vice-versa. Despite the fact that Roger and Anita believe she's one of the kindest people they know, the Dalmatians realize they'll have to work extra hard to prevent her from succeeding in her schemes.
Ivy also deceives her parents and according to her, she and Jackson act like they don't know each other when they are in school. She acts sweet in front of their parents, but acts like a little sister bully when they are alone. She is also shown to be easily bored, especially of art galleries and would rather be alone in her room, plotting to take over the world. She becomes rivals with Amber (101 Dalmatians) and Darla Dimple in Cherry's Adventures.