Goku's universal-level power and FTL combat speed overwhelm Doom's impressive but finite defenses.
Doctor Doom is one of Marvel's most versatile villains, but Ultra Instinct Goku operates at a power level that makes Doom's shields and armor look like paper. Goku's ki blasts threaten entire universes โ no force field Doom has ever generated could withstand that kind of output.
Doom's sorcery provides his best chance. Magic attacks the soul and mind, areas where Goku's ki defenses may not fully protect him. If Doom can land a devastating spell before Goku closes distance, he could potentially incapacitate the Saiyan. But Goku's Ultra Instinct reaction speed operates faster than thought, making landing any attack extremely difficult.
Goku's raw combat speed means he could blitz Doom millions of times before Victor's human-speed reactions register the threat. Even enhanced by technology and magic, Doom's reaction time cannot match a Saiyan who fights gods of destruction.
Doom's sorcery could target Goku's soul, bypassing ki defenses. His genius and preparation abilities mean he could potentially develop countermeasures for ki-based attacks, and his time travel technology offers unique tactical options.
Goku's universal-level power dwarfs Doom's defenses, and Ultra Instinct speed makes landing any attack on him nearly impossible. His ki blasts exceed anything Doom's shields have withstood.
Goku wins through overwhelming power and speed. Doom's magic provides a theoretical path to victory, but Ultra Instinct's autonomous defense makes exploiting that path practically impossible.
Doctor Doom also fights
Goku also fights