Goto Imasuji, known by his villain name Muscular, is a notorious antagonist in the anime series Boku no Hero Academia (My Hero Academia). He is a member of the League of Villains and part of the Vanguard Action Squad. Muscular possesses the Quirk 'Muscle Augmentation,' allowing him to vastly increase his muscle mass and strength, making him an extremely dangerous foe. He is known for his brutal and sadistic nature, enjoying fights and causing destruction. His most notable confrontation is with Izuku Midoriya during the Forest Training Camp Arc.