FNF Two Funker Offline Player is a fan-made modification of the original Friday Night Funkin', and its legality can depend on the terms set by the mod creators. In most cases, these mods are created for entertainment purposes and are not officially endorsed by the developers of Friday Night Funkin'. It's advisable to respect the intellectual property rights of the original game and any specific guidelines provided by the mod creators. Sharing or streaming gameplay is generally allowed, but it's recommended to verify the mod's terms of use and provide proper credit to the creators.