@NLTLF  
Sadly, I don’t think that’s possible. I wish it were though.
 
But when the artist chooses to remain anonymous, there’s nothing really separating them from the dozens of other anonymous artists.

@Background Pony #3F3D
 
there are images with all of those tags not made by this guy and some of those other images i would actually like, which is something i don’t want a filter, complex or not, to do.

@NLTLF
 
Complex filters work identically to the search engine with each line ||’d together
 
To filter out things like this, try adding this to your the Complex Hide section of your filter:
 
screencap, edit, diaper, caption
 
Basically imagine that each line of your Complex Hide filter is a different search and anything that shows up in the search results is hidden.
 
I would suggest adding !uploader:Background Pony #* to that, but apparently the search engine isn’t able to account for that, and only seems to work with actual user names.
 
For detailed information on what Derpibooru’s (really awesome) search engine can do, see Here

@NLTLF  
You probably could filter out edited screencaps referencing diapers uploaded by background ponies. I’m not sure exactly how to do it, but you could probably ask on the forums how to

@HenBasket
 
well i can’t figure out, even with complex filters, how to filter out screencaps with this guy editing in text about diapers, and only images by this guy.

@NLTLF  
It allows you to filter out specific combinations of tags. For example, let’s say you want images of the twins, but not images of both. With complex filters, you can hide images that have both of the twins, but not those which only have one

@HenBasket
 
i don’t know what that is

@NLTLF  
Then use the complex filter

@Smitty1991
 
the thing i don’t want to see are the images made by specifically this guy, which doesn’t have a tag i could filter

@NLTLF  
You should be able to filter certain tags that you don’t want to see. Or you could simply use the safe filter.
 
@Background Pony #6BF1  
I’ll take that diaper, thank you very much.

@Wrong White  
Well then i guees that we can count you in as one of us, as you yourself made a comment instead of ignoring the comments.

@Wrong White  
Welcome to the internet. Your straight jacket is over there, your diaper is here, and your lobotomy is next week.

God these comment are all brands of tisum

@Smitty1991
 
what aspect of these images do you think i want to stop. i’ll give you a hint, it’s the one that i can’t filter.

HELL YEAH! I wanna see thoes 2 in these Wondrebolt Diapers.

@Background Pony #6BF1
 
I also agree with that,

@Background Pony #6BF1  
Agreed!
 
@NLTLF  
You know you can block these tags by filtering them, right?

this needs to stop

STRANGER DANGER

@Background Pony #FCA7  
/)

@orbsah  
Nah they want.
 
@Background Pony #6BF1  
Thank

Someone should make art based on this.

@HenBasket  
thats right!

@Background Pony #0997