Jonathan Leopold Bismarck (b. January 3, 2000) is a Chawosaurian Comrade who is a member of the Bismarck Family. Born to Leopold Ulrich Bismarck, and Elisabeth Amanda Bismarck.

To his family, Jonathan is known to date women that went wrong, for example, he dated a girl who turned out to be a witch and got revenge on one of Jonathan's family members by cursing the family with a demon, and the results ended badly despite an Episcopalian priest doing an exorcism. The couple unknowingly split as a result.