[RamboUnchained]

This is not the cached thumbnail directory Kodi use, that's for sure.

So, I can delete it? I know for a fact that I have thumbnails that are on an external flash drive. Most of this stuff is fanart/backgrounds, but It'd take me a while to check all of my thumbnail folder to see if the fanart and backgrounds are there, too.

Yes! if you want you can delete addon_data->script.artwork.downloader->temp This folder contains only the images that AD has downloaded over time, that is all, and AD will not re-download them next time you run unless you deleted the artwork along your video files (inside the movie folders). Kodi uses a different folder called Thumbnails folder in Kodi->userdata, nothing to do with AD's temp folder. Got it?

To clarify, since it seems it is a confusing topic for some users:

What are exactly these images AD downloads overtime? If 'use local files' is:
ON: all missing (from video folder) online available artwork which has been selected in AD's config panel
Where: to the video folder and AD's temp folder.

OFF: none, with the exception of Extrathumbs and Extrafanart, which (if missing and its artwork type has been selected on AD's config panel) always will be downloaded.
Where: to the AD's temp and the video folder.

Obs. On both cases Kodi will create image cache by means of using Thumbnails and Texturesdb, based on the images and settings explained above. In the case where 'use local files' is off, all artwork selected, but Extrathumbs and Extrafanart, will be only in Thumbnails because we asked not to use local files (the source is an online URL and not local). Thus the images will be placed in Kodi's Thumbnails folder.

That's what I figured since it is after all a temp folder. Just wanted to be 100% sure. Thanks for the clarification.