Chiarus has been the topcat (i.e. leader of the gang) for some years now.
He is a very huge cat (even bigger then Frau Saude, who weighs in at 7 kg), has extremly thick, strong arms and legs, and a mild, calm disposition.
He is sometimes challenged by Wuzzler and/or Wunderl. Wuzzler sometimes challenges Chiarus just for the sport. The two are about the same size (and cats of the same size and strenght usually avoid to fight).
So they just sing their war songs and hiss and growl when they see each other.
Wunderl however just thinks (I guess) that his "inside status" automatically earns him the topcat's position. Wunderl is not a big cat and Chiarus gives him a beating when he is too insolent. Poor Wunderl...