Ok, after several hours of going over the main characters' pages, I managed to achieve what I consider a decent level of cleanseup.
I uniformed all pages so that they follow the same template and removed those bluntly added copypastes of the Dengeki Nintendo profiles since their info could be split and added in the exisiting sections (background, personality, powers & abilities).
In the future I shall do the same for any new profiles/info that might come up.
If you have any suggestions about improvements / changes to be made to the pages feel free to tell me.