Seeking Help with Name Translations

I just read the script for Dumbledore's Mystery, and the People's Publishing House translated Gellert Grindelwald's organization as "Wizard Purity Party," which sounds really awful. Do you have any good suggestions? (It doesn't have to sound good; it has to sound sophisticated.)

The second thing I need help with is the currency of the Germany wizards, Eisenkeiler, pronounced roughly "Eisenkeiler," meaning "iron pig." The author doesn't want to use "iron pig" because it sounds too awful and doesn't feel like currency, but "Eisenkeiler" is too long. Does anyone have a better idea for a currency name, something two characters long, like "Galleon" or "zhuoguo"?

The following is the revised version:

Bunty Dirk (Newt's beautiful assistant): Change to Bunty Dirk (more feminine).

Wyvern: changed to Bipedal Winged Dragon (This book was written before the movie's release; this translation had already been finalized).

Eyrie: changed to Cliff City (to avoid readers misunderstanding it as a floating city).