Machiko had a sister that died in childbirth. She also had a brother who died in a war.
Sometimes credited as Naoko Yukita.
Even though she did not speak English she appeared in the English speaking show Power Rangers. This was due to using Sentai footage of her and dubbing her voice over.
Machiko didn't reveal that she had Pancreatic Cancer until August 2005, almost two years after she obtained it.