Paul Bunyan, usually accompanied by his blue ox, Babe, is a legendary lumberjack from North American mythology. Since he’s a folk hero with reported superhuman qualities, it seemed like a perfect fit for a Rivka cosplay. (Besides, making Paul Bunyan a Jewish woman is almost as much fun as making Siegfried a Jewish woman.)
Rivka and her dragon are from these books, light-hearted feminist fantasy novels set mostly in the tropics. Above art by Rebecca Schauer.