I grew up on Power Rangers as well and to me it was the opposite Trini was by far my favorite character. I absolutely idolized her on the show and I was really angry when she. Left as for Sailor Moon my favorite character has always been Usagi.
I remember when I was young I used to think up crossover stories for Sailor Moon and Power Rangers.
Don't get me wrong, I adored Trini as well, it's just that I favored Kimberly a bit more. I was a girly girl, and I had more interests in common with Kimberly than Trini.
One of my junior high/high school best friends (the one who got me into Sailor Moon) identified a lot with Usagi, so I would have never been able to "choose" her even if I had been so inclined. (I wasn't, though.) Michiru was always my favorite by a long shot; after her, it would have been Hotaru, a character whom I've always found very relatable as well.
I think the very first original character I created (for an existing series) was for Power Rangers. The only thing I remember about her is that she was a young equestrian named Jesse whose alter ego was the "Purple Ranger." Actually, I'm pretty sure that is all there was to
remember. I didn't go too far with that idea. I wasn't into Power Rangers and Sailor Moon at the same time, but I'm sure that'd make for an intriguing combination.