Osmosis "Ozzy" Jones is the titular main protagonist of the film. He's a white blood cell and a rebel cop. He doesn't have much respect for authority. His best friend is Drix. He's funny and adventure-seeking. Osmosis Jones does anything to keep Frank in shape even if it means stopping Thrax.
In honor of the spooky season, here are what fictional characters be for Halloween. Credits of Fanart: xeternalflamebryx https://www.deviantart.com/xeternalflamebryx/art/Happy-Halloween-642891117
