I can't think of any cases off the top of my head about any lawyers in a Tintin comic. That is because of this:
The person who usually always gets into legal trouble is Tintin, and this is only because 'bad guys' who have connections with authority in various countries are always out to get him. Because intstructions are always to have Tintin gotten rid of, he is often taken prisoner by the police in some country and very quickly finds that he will be shot, get his head chopped off, or executed in some other manner. Actually when you think about it, this is a rather accurate plot summary of almost every book before Crab with the Golden Claws when he meets Captain Haddock! | 
