As I write this, there's about 45 characters who have a tag on the Frivolesque website and 38 of them have a bio on the cast page (with a few more untagged), so it might be a while before we document all of them. They should all share a common template, though:
Naming: Pages should be named with their full names as listed on the cast page, fully accented. You can then create redirect pages with the first name only, alternate names, unaccented variants of those names, etc.
The infobox: Don't forget to add the character infobox first and fill it out.
Quotes: Always nice to start the article with some of the character's most memorable quotes. Don't forget to give the source.
Bio/History: I pasted the bio and the author's notes from the cast page, it should serve as a good start (in wiki parlance, a stub), feel free to add or replace them with respectively a good, longer description about the character and its history (such as their creation and their story pre-Frivolesque).
Relationships: If any, relations between this character and others.
Trivia: Some fun facts that doesn't quite fit in the above sections.
Gallery: This is where you can put screenshots of the comics, I'd try to document there any outfit, any haircut, change of glasses, etc. the character ever wore in the comic.
Reference: Just like Wikipedia, you can use footnotes liberally.
If anything, just refer to the pages that were already made. Other sections can be added as needed, and other types of pages (chapters, locations, etc.) should also recieve similar templates, I'm also going to document them here later.
If you have any question about that, then just ask me :)