There are not too many options available to cleanly erase those figures and associated content unless you kept everything in separate content folders. If you created uninstallers from exe files or used DIM to install your files, then you can utilize those to remove figures and content. Otherwise, you would need to manually remove and hunt down all associated files to clean up the drive. Most likely, a 3rd party application will need to be employed to track down all disassociated files left behind after the purge.