HOLLYWOOD, Calif. — The boxing genius of Manny Pacquiao includes feet that belong in “Riverdance,” calves the size of grapefruits and deceptive power generated from his core. His movement is unorthodox, scattered and perpetual, as if designed by a jazz musician. He creates angles unlike any other fighter, past or present, appearing, disappearing, shifting, striking; on balance, off balance, even off one foot.

It is this style — part performance art, part technical wizardry, unique to Pacquiao— that defines perhaps the best boxer of his generation. And it started with a videotape of the martial artist who became his idol. It started with Bruce Lee.

Last month, as Pacquiao molded his style specific to Shane Mosley, his welterweight opponent on Saturday in Las Vegas, he wrapped his hands inside the dressing room at the Wild Card boxing gym here. To explain the way he fights, he settled on three words.

“Like Bruce Lee,” he said.

Growing up in the Philippines, Pacquiao studied Lee, watching his movies on endless loops. He still often views his collector’s set. “Enter the Dragon” is his favorite. His conditioning coach, Alex Ariza, says he believes Pacquiao built his baseline movement off Lee’s template, the continual attacking, the feet drummed in and out.