This was a suggestion of one of those lists I found a while ago and truthfully this is a great casting idea. Ralph Fiennes would be a perfect Frollo.
As far as Fiennes acting prowess goes, he can played Frollo regardless of the type of Frollo the version is depicting. Whether it be sympathetic or cruel or some mixture of both. Fiennes has a very unique ability to make his villains likable yet still very threatening. Even his hero gambit run the gambit from nice to intense.
Fiennes has a good look to play Frollo. Not only is he age appropriate to the role but he has a great bone structure for Frollo’s angular, austere yet intense face.
He’s got it all. He has good look for the role, he’s age appropriate (if you care), and he’s capable of playing a likable bad guy. Fiennes would be an ideal casting pick for Frollo in any induration of the character. But what do you think? Would you like to see the actor who played He-Who-Must-Not-Be-Named play Frollo?
Also the idea of the actors who played Voldemort and and Dumbledore playing the same character makes me smile.