Sure, I can help you create a simple Battlegrounds game using HTML and JavaScript. Here's an example implementation:
This is a basic implementation of the game where you can choose characters and perform moves and ultimate attacks against enemies. You can customize the character names, moves, and ultimate attacks as per your game design. Keep in mind that this is just a text-based implementation; to make it a fully playable game, you would need to add graphical elements, user interactions, and game mechanics using appropriate frameworks and libraries.