Pocoloco joins the Steel Ball Run race inspired by a fortune-teller who gives him news of his peaking luck. Through that luck, he becomes one of the fiercest competitors of the race. Pocoloco also happens to be a Stand user, whose Hey Ya! exists to cheer him up.

Pocoloco is a dark-skinned man of below-average to average height and slim or medium build. He sports a horseshoe mustache. Throughout the race, Pocoloco wears a light, cropped tank top and pants, which sport a brick-like pattern. He is also seen wearing a harness, knee high boots, and a classic leather aviator helmet covered with distinctive elliptical pieces. During the crossing of the frozen strait, he wears a long-sleeved shirt sporting a similar design as his tank top.

Pocoloco is cheerful and carefree. He is introduced in repose, counting clouds, before expressing his elation at the recent news of his peaking fortune, as told by a local fortune teller. His elderly co-worker perceives him as idle and naive. Pocoloco develops incredible faith in his luck, realizing it where acts that would have otherwise been unfortunate end up saving him and lending him improbable advantages during the race. Thus, he often makes expressions of amazement and joy, including variations of the exclamation "UH OH!".