Hehe, an hour and a half and 27 Tonadus later, I've mastered 2 Covers and 4 Counter Attacks, my A-team is Lv61, and I have 423k gil. Normally I don't grind in these kinds of games, but I think the combination of
1) They're the only enemy that appears on the Bone Village beach
2) They appear to have a very low resistance to being confused
3) They kill themselves very quickly with Aero/Great Gale, and only break confusion with 1 out of their 5 attacks
4) Their rewards are insane compared to what I've seen so far
I really couldn't help myself
EDIT: Doing the battle arena now, and I'm clearly way overpowered for it. A few notes:
- Tough Ring is spelled Touph Ring. Is this intentional?
- I was caught off guard doing Dio's arena battles and reset to swap my materia/equipment. I noticed the first time that the roulette handicaps were fixed each round, but the second time it was back to random handicaps like normal
- Not sure if this is an issue from vanilla, but the game remembers my limit gauge status before starting, even if I use it during the arena battles. I unintentionally walked in with a nearly full gauge, and end up taking just enough damage to have Meteorain against Dyne.
EDIT 2: Just did the rest of the scripted Gold Saucer events, and I was equipping Aeris for the Temple when I found an Umbrella (?) in my inventory, but I don't recall ever finding one. I did choose her for the GS date, but I didn't get any notifications about it during the sequence.