Ukuleleman is a tragic villain who appears in the anime, Space Dandy.
Ukuleleman is shown to be very obsessed with other people smiling, his obsession goes as far as willing to play a song of death that that freezes people into a permanent smile and keep them as statues in looking for the perfect smile.
Ukueleman is loney since he is the only member of his race and he was born into the would Just to die alone without a smile that is the fate of his race
Ukuleleman was obsessed with Dandy since out of everyone he known Dandy has the most happy smile and he wanted his smile for his own, he tried to steal Dandy's smile and failed. Dandy punched him and he bursts in flames, his mouth cracked and it appears that he died smiling.