Sorry for the late reply, but no, there isn't a different wiki for that. How the characters act in the manga can be found in bits and pieces around the characters' pages. Sorry if that inconvenienced you! To find out how the characters act, it would be better to check out the manga chapter pages. Technically, both mangas (the one by Kentaro Yabuki and the one by Mozu Hayanie) are spin-off works so they won't follow the anime entirely.
If you would like a compiled list of differences on how characters act and things like that (for Kentaro Yabuki's work), you can visit the "Anime and Manga Differences" page on the wiki.