Caldina could easily defeat all the lame Trix

I haven't gotten to Caldina yet so...

It's kind of a hard choice for me. In either adaptation that I've read or seen of Magic Knight Rayearth, Gardina isn't shown that much attention compared to Ascot or Alcione. She has only a few attacks shown: taking control of people's minds and their bodies and creating simple illusions. Darcy has had far more screen time and has shown what she can do when she puts her powers to the test.

I was originally going to pick Darcy because of how Fuu was able to release herself from Gardina's spell despite it being strong enough to take control of Hikaru and Umi. However, in Cephiro, the strength of ones magic is determined by that persons will and heart. This is not the case in Gardenia or Magix or anywhere else in the magical dimension. I think that if Gardina were to fight Darcy, she would be able to mind-control her two sisters into attacking her, before finishing off Darcy by using her bells. Although, I doubt she would even attack the three if not for a good price on their heads.

Darcy's got strong dark spells.