HERE COMES A NEW CHALLENGER! Jean from Breath of Fire 2 is a fantastic character. At first, Jean is in a giant frog form because he is cursed by a witch. Of course, (invoking the kiss the frog trope) to get Jean into his real form, Nina or Katt has to kiss him. After doing so, Jean turns into (insert powerful music here, preferably Golden Sun's Venus Lighthouse theme) a smaller frog form. Yep, Jean's true form is really a frog.
And so, here is another frog character. Glenn/Kaeru/Frog from Chrono Trigger is a damn good frog character. Jean is another one. Frog characters are actually pretty good, agreed? (if you don't say yes, domodragon53 will murder you because Frog is very dear to him).
Rating: Best French Frog Ever (to not piss off domodragon53 and Frog)