It all comes from Reppion and Holden’s Folklore Thursday strips, published through 2019 and 2020. They take so many different aspects of folklore, British, Irish, and global, and give us wonderful little strips to explain them, to fascinate us, to intrigue us. It was great on Twitter, it’s looking even better here in this new collection.
https://www.comicon.com/2023/08/29/dont-myth-this-previewing-john-reppion-and-pj-holdens-fascinating-folklore/
The folklore explored goes all the way back in history, the sorts of things deep-rooted into our cultural and societal psyche, and also goes deep into modern folklore.