You can embed works posted to pixiv in articles on pixiv Encyclopedia.
For details, check the Help articles About the main image, and About notations on pixiv Encyclopedia.
When embedding an image, please consider the following points.
Choose an image that is relevant to the article
For articles about characters, set a large illustration of the character or an image that is directly relevant to the article as the main thumbnail image.
There may be individual differences of opinion about which images are relevant to the content of a given article.
Do not choose works based on subjective preferences or "first come, first served" basis. Instead, explain your choice of work in the edit history or the comments section and select the featured image through discussion.
Respect the wishes of the person who posted the work
Some users may ask that their works not be used in articles if they feel that the intention behind their work does not match the content of the article. In these cases, please replace the main image or delete the embedded image immediately.