Bob the Hamster Fan-fiction and Cameo-appearances
Bob the Hamster is a trademark of James Paige and Hamster Republic Productions, and if you do use him in anything you should always include a small footnote somewhere saying so. Somewhere in the README file or the credits would be fine. Something like: "Bob the Hamster is a trademark of James Paige, used with permission"
James does give permission to use Bob the Hamster in fan-fiction, fan art, and other types of fan-created content, like cameo-appearances in other games. although any such work should be considered non-canon in the Bob the Hamster universe.
If you make something that features Bob the Hamster, please send a copy to James. (or at least send him a link where he can download it)
If you have any questions, just ask James