Captain Smarty Pants, also known as Good Romeo is the hero version of Romeo in the Season 2 episode "Gekko and the Opposite Ray" of PJ Masks series. He is turned into a hero when Gekko zaps him with the Opposite Ray. This most likely happened because Romeo had turned Gekko's friends into villains.
However, he was changed back to Romeo when Robot zapped him with the Opposite Ray.
As the hero version of Romeo, he is friendly and nice towards Gekko. He's also considered helpful, since he helped Gekko while he was trying to defeat Night Panther and Dark Owl.
Captain Smarty Pants is identical to Romeo, so nothing was different to his appearance, unlike, Catboy turns into Night Panther and Owlette turns into Dark Owl, with their colors on their suits and their eye colors changed.