Perona is very childish and immature, frequently acting on his own whims. He dislikes people telling him what to do and disobeying his will. Despite this, he is normally loyal to Gecko Moria and apparently sees her as a way of protection, as he was crying to rejoin her after being sent to Kuraigana Island. Like many others, Perona has his own unique laugh, which uses the word Horo (e.g., "Horo-horo-horo-horo-horo!"); this is based on the name of his Devil Fruit, the Horo Horo no Mi.