When a new family moves to town, the team meets Benny, a sci-fi loving kid who misses his old life and wants to find a way to get back home. When Ada and Friends try to lock Arthur’s fort, they use brainstorm to free him. Nia Thompson as Bianca 'Bee Bee', Benny's 4-year-old sister who loves tea parties.Taye Diggs as Amari Twist, Ada and Arthur's father.

Susan Kelechi Watson as Aisha Twist, Ada and Arthur's mother.

Terrence Little Gardenhigh as Arthur Twist, Ada's 11-year-old brother who loves magic and sports.

He is the only character to not have a favorite animal. Ever since he moved into town, he misses his old life but thanks to Ada and friends, they helped him find his way back home. He always comes up with great ideas and has a robotic dog built by himself.

Corey J as Benny B., an optimistic 10-year-old boy, the newcomer of the show's fourth season, and a technician.

She is also tomboyish which is what makes her always have her red bandanna with white polka dots all the time. She's funny, a bit bossy, positive, and confident.

Candace Kozak as Rosie Revere, an energetic 7-year-old girl, and an engineer.

He's caring, extremely nervous, shy, quiet, and easygoing.

Nicholas Crovetti as Iggy Peck, a fearful 8-year-old boy, and an architect.

She has her own magic lab and her big book of discoveries and inventions. Her catchphrases are 'Loading the Lab!', 'Wasn't that cool? Science is the best.', and 'We don't quit, we got grit!'. She's smart, kindhearted, sensitive, and always sweet.

Amanda Christine (Seasons 1-3) and Kaya Jackson (Season 4) as Ada Twist, an intellectual 9-year-old girl, and a scientist.

A second season was released on January 25, 2022, followed by a third season on September 12, 2022, and a fourth season on April 22, 2023. Developed and executive produced by Chris Nee for Netflix, the series premiered on September 28, 2021.

Ada Twist, Scientist is a 2021 animated preschool streaming television series, based on the eponymous book series by Andrea Beaty and David Roberts.

Iggy peck