She is voiced by Kathleen Barr, who also voiced Queen Chrysalis in My Little Pony: Friendship is Magic, Laverna in Barbie: Fairytopia series, Lydia in Barbie & the Diamond Castle, and Gwyllion in Barbie: Mariposa series.
Before at that years, Eris and her sister, Calissa are young, they struggle each other, its out of the way their relations is not very fine. She is excessively disrespectful towards her sister, they individualities weren't by the same. Having times to takes an obligations in the Changing of the Tides Ceremony, the queen obtained her abilities to creating Merillia, which is the mystical life forces of the ocean. However, upon Eris don't frees to does it because her sister is already taking the throne, being with much to hatred her anytime.
Later on the life, Eris making sure to had kicked out of her sister in order to seized both the throne and the powers. She could able to rules the kingdom of Oceana from 15 years, in which through spared on her plans and will enough to subvert the queen. When her niece and the queen's daughter, Merliah Summers, was going with the dolphin, Zuma, to arrived in Oceana, as they part of a journey. She suggested that the ocean had been mostly of the danger, due to her mother and Merillia then becomes aweary.
While Calissa upset, and being in imprisoning, but she is not does wrong things, Merliah coming to saving her mother, by worked together with Zuma as so, Eris also using her powers to created the whirlpool, which wants leads to Zuma shocked because Merliah would banished from Oceana. She went to tackle her, and that is subsequently trapped into the whirlpool after her defeated, Merliah eventually save her mother, helped her used Merillia to recovered Oceana, which Eris is dismissed.
- She is one of the Barbie villains who defeating all the times, the other being Laverna from Barbie: Fairytopia. Unexpectedly on this, they both voiced by Kathleen Barr.
- She is the first Barbie villain to be an merfolk, the second being Caligo from Barbie: The Pearl Princess.
Barbie as Rapunzel
The Barbie Diaries
Barbie & the Diamond Castle
Barbie in A Christmas Carol
Barbie in A Mermaid Tale
Barbie: A Fashion Fairytale
Barbie: A Fairy Secret
Barbie: Princess Charm School
Barbie: The Princess & the Popstar
Barbie in the Pink Shoes
Barbie & Her Sisters in A Pony Tale
Barbie and the Secret Door
Barbie in Princess Power
Barbie & Her Sisters in A Great Puppy Adventure
Barbie: Starlight Adventure
Barbie: Video Game Hero
Barbie: Dolphin Magic
Barbie: Princess Adventure
Barbie & Chelsea: The Lost Birthday