Jairo is a mysterious man who outfits himself as a jester. Alongside his similarly outfitted friends, Hairo and Sairo, they represent a mysterious group they call the Harlequins of Shadow. 

He should sound quite unhinged, and maniacal, to fit his 'persona' of a jester. His voice should also have sinister overtones. In Jairo's case, he should sound pretty sadistic and cruel, as out of the trio, he's the most ruthless of them.