i still have 24 koopa related pics by this artist saved in a folder and yet they seem to have vanished from e621. well, the ones that were here did.

plaguedogs123 koopa status:any

...Weird. Either they were never here, or somebody changed the tags. Lemme load up a tag history search and see what I can find.

Since you have them saved, just use http://iqdb.harry.lu/ to find them here. It'll locate deleted posts too, so you can check the deletion reason.