At first, Lumine appears to be weak, mild, and prone to mistakes: He has once gotten himself and Kody lost on the way to a well-known location in a city he has lived in for several months and even slept through an attack on Hageman's headquarters. Despite these shortcomings however, Lumine is loyal and faithful to his employers and possesses a strong sense of justice, as shown by how he stopped the pickpocketer, fought against the weredog robbers, and even attempted to protect Kody before becoming the latter's bodyguard.He tries very hard to do this, but Kody doesn’t want Lumine to tell his father that he’s being bullied, which makes this harder. Otherwise, Lumine‘s just a big ‘Ray Of Sunshine’.