As always, Nico Nico Encyclopedia[0] and Pixiv Encyclopedia[1] are good entry points for Japanese pop/otaku culture (though they tend not to have as many excellent sources as this article does).

This entry in the Pixiv Encyclopedia is valuable because it mentions the two most popular Japanese IPs using god Medjed in them and not covered in the article, Fate/Grand Order and One Piece.

[0]: https://dic.nicovideo.jp/a/%E3%83%A1%E3%82%B8%E3%82%A7%E3%83... [1]: https://dic.pixiv.net/a/%E3%83%A1%E3%82%B8%E3%82%A7%E3%83%89