You said in your previous post that you found the other images on a hentai site, I'm asking on deviantart through a private message for the links, if you don't then the images will be deleted.
Edit: Additionally why would pictures like this be on a hentai site?
I gave the warnings after reverting your edits on the episode pages that had their names.
As for the Batteries, their names aren't their real names, just their stage names. Kana's last name isn't Nickel, it's just part of the theme naming of the batteries. As for Manganese Ayana, 'Mangan' is how they say it.
Since The Batteries members all use stage names, they will be named with the appropriate spelling of each element since that is how it's supposed to be interpreted-- it's not an actual name. We always keep names in their Romaji, UNLESS they are foreign names, stage names, or otherwise supposed to be interpreted literally, like The Batteries. (This is also why The Batteries is not named Denchi-Gumi, since this is an English Wikia.)
If you're ever not sure about anything (especially when it comes to page names), you can always ask us! We appreciate your willingness to help.
They're saying it that way because that's how you say it in JAPANESE. Since those elements come from the foreign words, they are written in Katakana and are interpreted as they are. Since this is an ENGLISH Wiki, again, we do not name pages by their Japanese/Romaji if they are foreign names, stage names or otherwise supposed to be interpreted literally and have a straight meaning.
Again, this is why The Batteries' page is not named Denchi-Gumi. They do say Denchi-Gumi, but that's Japanese and it's supposed interpreted as it is: The Batteries. It's okay if you don't understand, we'll try to help you, but please do not keep changing their names on this wiki since at this point it may be considered page vandalism.
In the future, if you think we misnamed an article, just please ask us about it first. Honestly, that's been the real issue here. I promise you, if we get something wrong and you bring it to our attention, we will fix it. And if not, we can at least clarify for you why it's correct.
Keep in mind: you are not required to know Japanese to work on this wiki. No one will think less of you if you ask for help with the language.
The writing on the images are the characters' signature quotes that help define who they are or who they were. There's always a reason for everything, you shouldn't hate a nation just because they covered up their own artwork with writing.
It's just not neccessary to rage about it, especially in public and in this wikia. We appreciate any help on this wikia, just please, do not rant in public.