Killua has long, reddish hair. His hair slowly turns to yellow at the tips, from the sun. Around his waist, he has four thick leather belts, each with lots of little pouches full of different tools to fight with. He wears light leather armor with an iron forehead protector.
Kodoh's personality isn't really something that can be described by one word. With him being such an complex person it is very hard for anyone to ever really "define" him.
His dominant traits are his confidence and his utter fearlessness. Despite his cockiness, he appears to be a calm person. He is also shown to fall into a state of extreme rage when insulted. Other Twilights point out that Kodoh tends to be naive, due to him acting without understanding the situation. Contrary to what people say, he is extremely understanding and prefers to act once he has analyzed the situation.
Kodoh is expertly manipulative and prone to think several steps ahead of those around him, giving him a remarkable talent for making subordinates act exactly as he wishes despite appearing not to have had a hand in their decisions, and has been shown some aspects of greedy and selfish desires. He has a strange habit of making singing tones while talking, especially when he is nervous. Shown usually calm when playing games, he can sometimes be very nervous when not knowing what to do.
Kodoh remained dangerous mentally. He preferred to destroy a person's mindset during battle. His job as an assassin only extended this sadistic view.
The Story of Killua: The Story of Killua (キルアの物語, Kirua No Monogatari), is a storyline by EmperorLeon, and a fanon spin-off of the popular animanga series Gintama by Hideaki Sorachi. The story focuses on Killua becoming a Samurai, and roaming the Earth in pursuit of power and money. It begins with him at the age of 13, where he is given a katana by a wandering traveler.
- Killua was inspired by Adlet Mayer.