Mycroft Holmes is the older brother of Sherlock Holmes. He possesses the same powers of reasoning as his brother - in fact, to a much higher degree - but is generally too lazy to do any practical work that could prove his conclusions. Nonetheless, Sherlock still seeks him out for particularly difficult cases. He is a founding member of the Diogenes Club - catering to the most anti-social men in London - and officially works as an auditor for the British Government. However, his latter role is actually far more crucial - indeed, Sherlock himself states that Mycroft is so essential that "occasionally he is the British government".