It's one of those behind the scenes curiosities in the Sentai franchise's history -- 20 year old actress Akiyo Hayasaka was originally cast in the role of Miki/Goggle Pink, not only going as far as getting fitted for wardrobe and taking publicity stills with the rest of the cast, but she also filmed at least three (three!) episodes. (That's a lot of reshooting for these tightly scheduled shows to do just because you didn't like who you cast in the part.)
|Hayasaka and Jun'ichi Haruta in a scene from the third episode.|
She was replaced by Megumi Ogawa, who proved to be really popular, remaining so well-liked by fans that Bandai released two (two!) figurines of her in their Girls in Uniform line. It's unknown why Hayasaka was replaced, but I suspect they wanted a more "idol-y" type. There couldn't be many hard feelings between Hayasaka and Toei, however, since she went on to guest star in an episode of Sharivan a year later.
|Goggle V as we know them, with Ogawa.|
No offense to either Hayasaka or Ogawa, but I don't really think the casting swap made much of a difference -- it certainly wouldn't make-or-break the series the way Dairanger would have been FLAT OUT DEAD on arrival had the super blank Keisuke Tsuchiya remained playing Ryou rather than the cool, charismatic Keiichi Wada, whose talents would have really been wasted as Kazu.