Bichura is Kucabara's subordinate and it also seems like the two of them see each other as a friend, too. Bichura is against Kucabara's way of doing things most of the time, like when Kucabara decides to defend a person without there being any real profit to gain from it. Bichura is also able to transform into something like a rocket. (Source: bleachasylum.com)