Adam Blaustein is a name formerly used by the American voice actor Madeleine Joan "Maddie" Blaustein, who was born on October 9, 1960, and passed away on December 11, 2008. In the context of anime and video game voice acting, Maddie Blaustein is often credited under her birth name, Adam Blaustein, particularly in earlier works. Her career was notably associated with the New York-based studio 4Kids Entertainment, where she became a prominent voice actor for numerous English dubs of popular Japanese anime series during the 1990s and 2000s.

Blaustein is best known for her long-running role as the voice of Meowth, the talking Pokémon from Team Rocket, in the Pokémon anime series. She took over the role from Nathan Price starting with episode 32 and continued voicing the character through season eight. Her portrayal extended to related media, including Pokémon Chronicles and various Pokémon films. Another significant and frequently cited role is that of Solomon Muto, the grandfather of the protagonist Yugi Muto, in the second series of Yu-Gi-Oh! and in the spin-off Yu-Gi-Oh! Capsule Monsters. She also voiced Sartorius in Yu-Gi-Oh! GX.

Beyond these flagship roles, Adam Blaustein's voice acting portfolio includes a wide range of characters across different series. In Kirby: Right Back at Ya!, she voiced Chef Kawasaki and Waddle Doo. She played Dr. Kureha in the 4Kids dub of One Piece and Dr. K in Cubix: Robots for Everyone. In the video game realm, she provided voices for several characters in the popular role-playing game Valkyrie Profile, including Arngrim, Lawfer, and Lezard Valeth. Her other anime credits include roles in Slayers Try as Jillas, Ultimate Muscle as various characters, and G.I. Joe: Sigma Six as Overkill.

While specific recurring collaborations are not exhaustively documented, as a core member of the 4Kids Entertainment talent pool, Blaustein frequently worked alongside voice actors such as Dan Green, Veronica Taylor, Eric Stuart, and Rachael Lillis. Her notable achievements include a remarkable vocal range, capable of performing deep, masculine voices for characters like Arngrim in Valkyrie Profile, as well as more high-class or androgynous tones for characters like Lawfer or the mad scientist Lezard Valeth. This versatility made her a valuable asset in the industry. Before her voice acting career, she also worked as a comic book writer and artist for major publishers like Marvel Comics and Milestone Comics, and later served as a Creative Director for the Weekly World News.