I am enamored of the idea that mythological figures watched other cultures' myths 'as they happened' the way we would go to the theater or watch television. I have an image of Anubis and Odin griping that Roman myths are reruns with extra features that are not necessarily worth sitting through the whole series again.
Short rundown for people who don't have Erik's awesome mythology book:
Anansi - The guy in the hat with varying number of arms - Spider-themed trickster from West Africa and the Caribbean. Featured in many children's books, referenced in a few comic books, and delightfully in Neil Gaiman's American Gods and Anansi Boys.
Sun Wukong - The guy with the all low-case font and head band - Monkey King out of Chinese mythology. Another trickster. Featured in so many versions of media that it's impossible for me to recall them all at this hour of the morning. You may have seen him in Saiyuki, Journey to the west, Forbidden Kingdom, Lost Empire, or lots of other things.
Erlkönig - guy in the last panel who keeps showing up with bad times in the 'verse, if you don't know him by now - The Alder King or Elf-King (depending on your take on translation), a forest-based fae creature of Germanic and Scandinavian origin with lethal grabby hands.
Erik belongs to Leroux and Webber.
Norrington belongs to Disney, Bruckheimer, and Davenport.
Javert belongs to Hugo, Boublil, Schonberg, and Kretzmer.
Erlkönig, Sun Wukong, and Anansi are mythological characters and belong to everyone and no one.