As an AI text-based model, I can provide you with a simplified code example to create a basic 3D Dragon Ball Z open world game in the form of an HTML file. However, please note that this example will not include advanced graphics or pictograms, as those would require more complex implementations and game engines. Here's a basic structure to get you started:
Please note that this is just a basic starting point, and you would need to implement more game mechanics, such as enemy characters, combat system, and a larger game world, to create a full-fledged Dragon Ball Z open world game. Additionally, incorporating 3D graphics in JavaScript within a single HTML file is beyond the scope of a simple code example.
To further enhance this game, you would require a game engine or a library like Three.js to handle 3D graphics and detailed gameplay mechanics.