Haruko or Halko Momoi (born December 14, 1977) is a Japanese voice actor and singer. She is usually typecast as upbeat girls and the like. She was also a computer expert and a Cosplay Otaku Girl.
Her 'Halko' stage name was derived from (obviously), HAL9000.
- Chika Minazuki in Ai Yori Aoshi
- Utamaru in Da Capo
- Ai Hayakawa in Final Fantasy: Unlimited
- Mai Nonomiya in Lovely Idol
- Marin Nijihara in Magikano
- Komugi Nakahara in The SoulTaker as well as its More Popular Spin-Off OVA, Nurse Witch Komugi
- In a case of Remake Cameo, she voices Koharu Yoshida (the rebooot Komugi's mom) in the Nurse Witch Komugi R reboot
- Maromi in Paranoia Agent
- The official voice actress of Momo Kanda/Wonder Momo, Halko first voiced her as a Guest Fighter in Queen's Blade: Spiral Chaos for the PSP. She later reprised her role for the Wonder Momo anime ONA's as well as Wonder Momo: Typhoon Booster.
- Mii in Popotan
- Fillia in Prism Ark
- Sun Seto in My Bride is a Mermaid
- Faris Nyannyan (Akiha Rumiho) in Steins;Gate
- Anise Tatlin in Tales of the Abyss
- Keiko Sonoda and Maru in UFO Ultramaiden Valkyrie
- PAC2-AR in Uchuu Senkan Tiramisu
- Yurume Aida in Yurumates
- She sings the opening song and cameos as herself in Hikonin Sentai Akibaranger