Hideo is Tsubasa's (and, to an extent, Hikaru's) father. They moved to Hokkaido so he can pursue a career as a baker working at the Ibaragi ranch. When he discovers Hikaru, he is brainwashed by D.D. to believe that she is Tsubasa's long-lost twin sister.    (Source: http://figure17.areaseven.net)

Tsubasa Shiina is a 10-year-old girl who recently moved to Hokkaido to live with her father. In school, she is very quiet and unsociable with her classmates. Then one night, she witnesses a UFO crash in the forest near her home. She rushes to the scene and finds the pilot, codenamed "D.D.", in a barely stable condition. Also in the scene is a Maguar, a hideous alien that hatched aboard D.D.'s ship. As the Maguar is close to taking Tsubasa's life, an alien lifeform fuses with her body to form the Riberus battle armor Figure 17, which shortly destroys the alien threat. The life form takes the name Hikaru and turns into an identical twin of Tsubasa. As time passes, Tsubasa becomes more open to everyone around her, thanks to her new twin sister Hikaru. However, with Maguar eggs scattered all over Hokkaido, their ability to form Figure 17 is needed to eliminate all hatched Maguars until backup from D.D.'s home planet arrives on Earth.
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(Source: Anime News Network)

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He is known for playing tough or grouchy men in dubbed anime and video games. His career includes Hotohori in Fushigi Yūgi and Jin in Samurai Champloo. He also played numerous cameos and minor characters in Rurouni Kenshin, in addition to the major character of Hajime Saito. He also does Don Patch in Bobobo-bo Bo-bobo as well as Gabumon and other voices in Digimon.  According to Anime News Network, Thornton has the most credits of any male voice actor and he is second in total voice actor credits only next to Wendee Lee. He has been in nearly two hundred voice-over productions for Japanese animation.  Thornton is also well-known for having played many different minor voice roles throughout the Power Rangers franchise (and similar series such as VR Troopers and Masked Rider).  Thornton has also had experience with ADR direction. Currently, he is co-directing the ADR for the popular anime series Bleach alongside Wendee Lee.

From ADV:<br>
Tsubasa Shiina is a fourth grader who just moved to Hokkaido with her father. Shy Tsubasa has a hard time making new friends at school. Her father is concerned, but he's just too busy with his new job. He even shows up late on Parents' Day. One night, Tsubasa sees a strange-looking object falling from the sky. Is it a spaceship!? It falls right into the woods by her house. It turns out to be a wounded alien in a damaged spaceship. All of a sudden, a monster starts coming at Tsubasa! Tsubasa suddenly transforms into "Figure." Confused and afraid, she somehow manages to defeat the monster with her new unbelievable power. After the fight, Tsubasa sees a girl who looks just like her - the girl's name is Hikaru!

Hideo Shiina