WMG / UFO Robo Grendizer

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.
  • If Sayaka has to fight against Maria (basically a tsundere vs tsundere fight) for the love of Kouji (as we saw many times in some Super Robot Wars games, and also in some stories and parodies), you can bet safely your ten bucks that Sayaka will kick the little bitch redhead ass for good...