Breath of Fire 3:
Ryu: 10/10. Yeah, pretty much the most overpowered character like...ever. Your Main healer who is tanky with decent speed and damage, and a few nice support spells like Shield, as well as deep AP resources to run just about any role you want him to via skills, and Masters...and this is before factoring in what really makes him broken.
Rei: 6/10. He's good when he's around, but he misses like the entire first half of the game; even before Balio/Sunder, he has long leaves of absences, so his Jeigan uses are compromised. That said, only character who do damage that can kind of keep up with Ryu (though requires Influence), and constant Ex Turns, as well as a few nice support spells make him good in the 2nd half.
Teepo: 5/10. He's Ryu with slightly better stats and boss damage but no healing. Losing trade overall, I'd say.
Nina: 4/10. I...think some people are overselling how good she is early game. She's merely decent early on, and actually, Typhoon doesn't make her more useful, cause she's not the ideal user of it, and that compromises her use right there. She's always Frail, however, to the point where its a liability, not quite fast enough to Ex-turn before Masters kick in, and she's pretty much completely useless in the 2nd half of the game. Honestly, once you get Garr, the only reason to use Nina (forced moments aside) is in the Volcano where yeah, Iceblast is pretty rocking.
Momo: 7/10. Momo is part of what holds Nina back. Quake is good early on, if limited, for MT damage, and Typhoon is better used on her due to higher Int and how Momo can kind of take a hit (and her durability isn't unsalvageable-able the way Nina's is)...she pretty much obsoletes Nina outside of resources and speed, and nina usually doesn't Ex-turn so the speed thing ends up not meaning as much as it does with, say, Rei, and in the case of resources, that's offset by how Momo can do actual things on her turn without costing AP (ie she has an actual physical.) Actually, Momo having a decent physical matters a lot since it means she can use things like Shadow Walk and do actual reliable damage.
Peco: 3/10. I use to hype the guy, but...yeah, not really much going for him. His equipment was far too bad for its own good, which is what really holds him back, since it maens that Twink Potential...doesn't go far. So why isn't Peco lower? Well, he does a few things decent. For starters, unlike Rei and Garr, he has an AP score and actual MT Damage that registers. But more importantly, cause he joins at level 1, he makes getting master skills so much easier, and he can absorb bad stat gains as a result so you never have to care. In the end, though, that's all he's really good for. They basically tried to bring a Rand-style character back from BoF2, except his bases aren't as good as Rand's to offset the equipment, and his skillset is like a fraction of the use overall.
Garr: 6/10. Garr's good at what he does. Takes hits well, dishes them out reasonably well, ESPECIALLY once he gets the Beast Lance, and...ok, that's all he's good at, but he does it well enough that you're set. He compliments both Momo and Rei nicely for different reasons. He'd be higher, but poor AP and Speed limits his offensive potential. His skillset could be a little better too.
SaGa Frontier Mecs:
BJ&K: 6/10. Mec with a neat gimmick!
Engineer Car: 5/10. Mec with a less neat Gimmick! Nice availability though.
Leonard: 7/10. Above Mec but better!
PzkwV: 3/10. In a story where you have a lot of Mecs, and they're all better, so there's no reason to use him like ever.
Rabbit: 5/10. BJ&K with a less useful Gimmick, yeah that works.
ZEKE: 6/10. Kamikaze is good damage, and he's fast regardless, so that's worth something.