painting in Simon Bisley style. Goku in the middle of a massive power-up, Super Saiyan form with spiky golden hair glowing intensely, his muscles enormously enlarged and bulging with raw power. Blinding golden energy explodes around him in a massive aura, crackling lightning and powerful energy waves radiating outward. His eyes are burning with bright turquoise energy, intense and fierce expression on his face. Dynamic action pose, body tensed as overwhelming power surges through him, ground cracking beneath his feet from the sheer force. Dramatic low angle perspective emphasizing his massive muscular physique and godlike presence, bright golden light illuminating the scene, explosive energy particles and sparks flying everywhere, epic and intense atmosphere, highly dynamic composition.