Michaela Dietz (born November 1, 1982) is an American voice actress. Starting her professional career in 2005, she voiced Riff on PBS children's television series Barney & Friends, Amethyst on Cartoon Network television series Steven Universe and Steven Universe Future, Dolly Dalmatian on Disney Channel's 101 Dalmatian Street, Pita in Fallout 76, Vee on Disney Channel's The Owl House, and Darryl McGee on Disney Channel's The Ghost and Molly McGee.

Early life and career Dietz was born in Incheon, South Korea on November 1, 1982, then was adopted and raised in Cooperstown, New York at three months old. She studied International Studies at Middlebury College. She has spoken about how her experience as an adoptee inspired her performance as Amethyst on Steven Universe. This article extracts quotes from Dietz's AMA on the Steven Universe subreddit.

Dietz began acting on television in 2005 with the role Ellie in Discover Me. She later appeared in a short in 2009 entitled Red, Black & Blonde as an Auditioning Dancer #1 and Interracial Couple #3 in K-Town.

Later career Dietz has voiced ongoing characters in two American children's animated TV series, Riff in Barney & Friends and Amethyst in the Steven Universe franchise. However, her role as Amethyst was the first time she had voiced an animated character.

She voiced Amethyst in the mobile games Cartoon Network Superstar Soccer: Goal (2014), Steven Universe: Attack the Light (2015), Steven Universe: Save the Light (2017), and Steven Universe: Unleash the Light (2019). In 2019, she voiced Amethyst in the TV film, Steven Universe: The Movie, a continuation from the Steven Universe animated series. She reprised the role in a 2021 anti-racism PSA by Rebecca Sugar and Ian Jones-Quartey.

She has since gone on to voice several characters for Disney, such as Dolly Dalmatian on 101 Dalmatian Street, Vee on The Owl House, and Darryl McGee on The Ghost and Molly McGee. She also voiced Glass Boy in the Adventure Time: Distant Lands episode "Obsidian", and Danelda in two episodes of Mighty Magiswords.

She also voiced Blue Behemoth in Kid Cosmic, and Dottie in two episodes of Tuca & Bertie. Additionally, she voiced various characters in Monsters at Work, Jennifer in an episode of Fairfax, and Michelle Green in four episodes of Craig of the Creek. She recently voiced Ariel in the 2022 episode, "Ariel Force One", of Middlemost Post. He is the creator of Middlemost Post

She also voiced characters in video games such as Grand Theft Auto V, Fallout 76: Wastelanders, and Lego Dimensions.

In 2021, she voiced Tomas in the film, The Witcher: Nightmare of the Wolf. The previous year she provided narration for a series of narrated videos which were part of a Cartoon Network digital series celebrating Asian American and Pacific Islander Heritage Month.

In 2025, Dietz voiced Hannah Schwooper in Long Story Short. She also voiced Bex in Super Duper Bunny League.

Filmography Film Year Film Role Notes 2005 Discover Me Ellie2009 Red, Black & Blonde Auditioning Dancer #1 Short K-Town Interracial Couple #3 2012 Totally Smooth Sherry Short 2019 Steven Universe: The Movie Amethyst Voice, television film 2021 The Witcher: Nightmare of the Wolf Tomas Voice A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information.

Television Year Title Role Notes 2006–2010 Barney & Friends Riff Voice 2013–2019 Steven Universe Amethyst, additional voices Voice, main role 2017–2018 Mighty Magiswords Danelda Voice, 2 episodes 2019–2020 101 Dalmatian Street Dolly Dalmatian Voice, main role Steven Universe Future Amethyst, additional voices Voice, main role2020 Adventure Time: Distant Lands Glass Boy Voice, episode: "Obsidian" Craig of the Creek Michelle Green Voice, 2 episodes2021 Kid Cosmic Blue Behemoth Voice, 2 episodes Tuca & Bertie Dottie Voice, episode: "Planteau" American Dad! New Doctor, Clephanie Voice, 2 episodes Fairfax Jennifer, Hans Kim Voice, episode: "Secure the Bag"2021–2023 The Owl House Vee Voice, 3 episodes2021–2024 Monsters at Work Snore, additional voices Voice, recurring role The Ghost and Molly McGee Darryl McGee Voice, recurring role2022 Middlemost Post Ariel, Tilly Voice, 3 episodes Lego Monkie Kid Scorpion Queen Voice, episode: "Amnesia Rules" Baby Shark's Big Show! Wallace Voice, episode: "Welcome Wagon" 2024 Star Trek: Prodigy Maj'el Voice, recurring role (season 2) Jentry Chau vs. the Underworld Tokki Voice, 3 episodes Kiff Banana Voice, episode: "Rotten Banana" 2025 Super Duper Bunny League Bex Voice, main role Long Story Short Hannah Schwooper Voice, recurring role 2026 The Bad Guys: The Series Chi-Hoon Voice, minor role Rick and Morty Stephanie Jergins Voice, episode: "Rick Fu Hustle"PupstructionGigiVoice, episode: "Tank's Big Little Brother"

Video games Year Title Role Notes 2013 Grand Theft Auto V Additional voices 2014 Cartoon Network Superstar Soccer: Goal Amethyst Mobile phone game2015 Steven Universe: Attack the Light Amethyst Mobile phone game Lego Dimensions Chunk Level Packs 2017 Steven Universe: Save the Light Amethyst 2019 Steven Universe: Unleash the Light Amethyst 2020 Fallout 76: Wastelanders Various voices DLC

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