Luka’s most defining character traits are his optimism, hastiness, naivety, and lack of intelligence, usually needing Alice or others to explain every single detail to him or mindlessly rushing into a fight while being unaware of the whole story and the consequences of his actions could bring. Even though he is usually meek and easy-going, witnessing injustice, especially in the form of strong ones oppressing the weak, ignites an extreme and sometimes destructive blind anger in him.