Helena Palomanes is a Brazilian actress and voice actor based in Rio de Janeiro. She is the sister of fellow voice actor Luisa Palomanes. Her body of work is extensive and includes dubbing for live-action series, films, animations, and video games, with a significant number of roles in anime.

Palomanes has provided the Brazilian Portuguese voice for a wide array of characters in popular Western series. Among her most prominent live-action roles are Hope Mikaelson in The Originals and Legacies, and Arya Stark in Game of Thrones. She is also known for her work in animation, such as voicing Sabrina Raincomprix in Miraculous: As Aventuras de Ladybug and Violeta Beija-Flor in DuckTales.

In the realm of anime, Palomanes has voiced characters in several well-known series. She is the voice of Kyoko Machi, the dullahan teacher, in the Brazilian Portuguese dub of Interviews with Monster Girls. Her other anime credits include roles in Jujutsu Kaisen and Re:Zero. She also voices Midari Ikishima in Kakegurui. Her participation in conventions, such as being a guest at the Shin Anime Dreamers event in Santa Maria, Brazil, highlights her engagement with the fan community.