Danbooru :

Danbooru2019:
https://www.gwern.net/Danbooru2019

A LARGE-SCALE CROWDSOURCED AND TAGGED ANIME ILLUSTRATION DATASET
一个大规模的众包和标记动画插图数据集

Danbooru2017:
https://www.gwern.net/Danbooru2019#danbooru2017

Danbooru2018:
https://www.gwern.net/Danbooru2019#danbooru2018

Getchu : (原址需科学上网访问)

百度云:
https://pan.baidu.com/s/1bTWoEcJRzXJaMM8jELPCBA

CSDN:
https://blog.csdn.net/ONE_SIX_MIX/article/details/95935010

github 仓库:
https://github.com/One-sixth/getchu_character_picture_grabber

Niconico : (仅限于学术目的的图)

需要科研机构申请才可以下载。【放弃~】
nico-opendata:https://nico-opendata.jp/en/index.html
At Niconico, we are providing a wide variety of data from our services,
to be used for academic purposes. 仅限用于学术目的。
包含:
Nico-Illust 超过40万张图像(插图)
This dataset contains over 400,000 images (illustraions) from Niconico Seiga and Niconico Shunga.
Niconico Seiga is a community for posting illustrations. 一个发布插图的社区。
Niconico Shunga is a community for posting illustrations, where submission of explicit content is allowed. Viewers under age 18 are prohibited in this website. 本网站禁止18岁以下观众观看。

其他:

IIIT-CFW
https://zhuanlan.zhihu.com/p/25138563
集合了各种类型的数据集(好多没见过的,感觉很全?可能有用,得再看看。),
比较麻烦的就是得登陆某个网站、再用度盘下载。
各领域公开数据集下载
“整理了一些网上的免费数据集,分类下载地址如下,希望能节约大家找数据的时间。”

真实人脸:
VGGFace2 : A large scale image dataset for face recognition
http://www.robots.ox.ac.uk/~vgg/data/vgg_face2/index.html#about
9000+身份,330w+图像