Didi functions as the ultimate mood-maker for UPbeats!. He is a highly competitive, intensely passionate young man who aims 100% of his energy into motivating his team. Because he is incredibly hasty and impatient, his raw momentum often outpaces his planning, leading him to make silly or clumsy mistakes on a regular basis. He has a thoroughly innocent, honest, and gullible nature. This pure heart makes it incredibly easy for others to trick him, rendering him the favorite daily target for pranks pulled by the mischievous unit twins, Rasca Moncrief and Ranka Monck. Despite his booming, overly loud voice, explosive bursts of temper, and chaotic energy, he actually possesses an exceptionally proper and high-class family background.