Hiiro
- Hiiro is a GT Sister from the Transformers GT portion of the Generation 1 continuity family.

Hiiro (ヒイロ) loves being GT-R Maximus's race queen, particularly all the stagecraft, in which she always hams it up for the camera. She's shy, modest and a reliable partner with great skill in analyzing situations derived from placing more value in the process of her work over the results. She prefers instructions that aid in making races fair and square, but doesn't offer them up too often so as to not put too much stress on Maximus. She's a little emotionally manipulative.
Fiction
Transformers GT: Mission GT-R

At the race track, Hiiro and the other GT Sisters began to cheer on their respective Autobot partners in, uh, their unique ways, when they were interrupted by a fourth mysterious GT Sister and her equally-mysterious partner. Surprise, it was Noa and GT Megatron! Would he win the race? Hiiro better cheer extra hard and/or threaten to cry some more! Transformers GT: Mission GT-R
Transformers GT: Mission GT-R story pages
Alongside the other GT Sisters and their GT Transformer partners, Hiiro participated in promotional events such as photo shoots in order to promote coexistence between humans and Transformers. The Work of the GT Sister Race Queens? She then assisted Maximus in his battle with a reincarnated Unicron. Bringing Down the Sword As the battle continued, Hiiro entered battle mode and used the "Matrix In" ability possessed by all GT Sisters to merge with Maximus and restore his true strength. Joining forces with the other racers and GT Sisters, the two fought and defeated Unicron. The True TFGT
Toys
Transformers GT
- Packaged with GT-R Maximus, Hiiro is a highly-poseable figurine (like a Microman) and comes with a few extra pairs of hands.
Notes
- Hiiro's outfit, or "scanning motif" as it's called in her profile, is the outfit worn by real life race queen group D'station Fresh Angels at the time Transformers GT was released. The Fresh Ladies is one of two race queens representing the KONDO Racing Team, whose car GT-R Maximus transforms into, and represents one of their main sponsors, D'station.

