Munkustrap is overprotective, he simply has to look out for everybody, 
and that is why he is the one fighting Macavity, because he feels 
he's responsible for all the others. All the other cats react to him 
as if he's some kind of big brother. He is calm and doesn't seem to 
be moved by anything, but at the same time, he doesn't seem to be 
able to let go entirely. He's careful about not treating Rum Tum 
Tugger as a smaller sibling, and yet, they both know who's in charge.

by Llisa