It sounds like you’re referring to a fan-made game or a character roster concept.
What is Sonic Battle JUS Mugen V3?
Deep Transformations: The game goes far beyond basic forms. You can play through every evolution, from Kid Goku and Goku Ultra Instinct to Sonic’s Phase 4 and Hyper Shadic. Sonic Battle JUS Mugen V3
⚠️ Note: Always scan fan-made downloads for viruses. Only use trusted sources. It sounds like you’re referring to a fan-made
Character Balancing: To keep gameplay competitive, the developer implemented buffs for characters like Sonic Black and Amy, while nerfing top-tier threats like Hyper Sonic (reducing attack power by 10% and fixing infinite combos). Gameplay Mechanics Sonic Battle JUS Mugen V3