A comprehensive profile of Haruka Shimazaki as an anime voice actor must distinguish between two different Japanese public figures who share this name. The voice acting roles listed in the query are performed by a seasoned professional voice actress, while a separate, more famous individual is a former idol who has done limited voice work.

The professional voice actress, whose name is properly rendered in Japanese as 嶋崎 はるか (Shimazaki Haruka), has built a substantial and long-running career in anime, video games, and other media. Born on August 1 in Hokkaido, she is affiliated with the talent management firm Ken Production. Her career began in the mid-1990s, with one of her earliest and most notable roles being金子留理子 (Ruriko Kaneko) in the popular series You're Under Arrest (逮捕しちゃうぞ), a character she voiced in the original OVA, the subsequent television anime, and the feature film.

Shimazaki is particularly well-known for her extensive work within the long-running toy and anime franchise Hikarian (電光超特急ヒカリアン). She provided the voices for multiple characters across the series, including the main roles of Nozomi and Minayo Kanda (神田ミナヨ). Her involvement in the franchise extended for many years, also encompassing various direct-to-video releases, DVDs, and theme park attractions related to the Hikarian and associated Tomica toy lines.

Beyond Hikarian, her career encompasses a wide variety of other roles. In the early 2000s, she voiced characters such as椎名永美 (Eimi Shiina) in Mahoromatic (まほろまてぃっく), 赤城真奈美 (Manami Akagi) in Full Metal Panic! (フルメタル・パニック!), and 橘理子 (Riko Tachibana) in GetBackers (ゲットバッカーズ -奪還屋-). She also took on leading roles in adult-oriented OVA series, notably as 金田麻衣子 (Maiko Kaneda) in the Discipline series and as 白取未琴 (Mikoto Shiratori) in Inyōchū (陰陽奴). Her work also includes minor roles in mainstream hits like Inuyasha (犬夜叉) and contributions to numerous video games and radio dramas.

In contrast, the Haruka Shimazaki known to the wider public is a former lead member of the idol group AKB48. Born in Saitama Prefecture on March 30, 1994, her primary career has been as an actress and idol. Her sole known foray into anime voice acting was a guest role in the 2014 film Yo-kai Watch: Tanjō no Himitsu da Nyan! (映画 妖怪ウォッチ 誕生の秘密だニャン!). In the film, she voiced the character Yukippe, the grandmother of the protagonist Keita as a child. This role was a one-time special appearance tied to her idol career, as she and other AKB48 members were featured in the franchise's music and promotional activities at the time. Since graduating from AKB48 in 2016, she has continued to work primarily as an actress in television dramas and films.