UFO Robo Grendizer/WMG

Sayaka Yumi from Mazinger Z showed up in UFO Robo Grendizer.
Sayaka was supposed to show up in the series and having a role active, but she was replaced by Maria Grace Fleed cause Executive Meddling. However, the prototypical Tsundere lead would get NOTHING from that. Shortly after Maria's first appearance, she kidnapped the girl and spent the whole remainder series impersonating her.