Mycroft Holmes is the older brother of Sherlock Holmes.
Biography[]
Mycroft met Sherlock and Dr John Watson at the Shush Club in the East End of London for Watson's stag party before his marriage to Mary Morstan. Later, after Sherlock threw Mary from her honeymoon train to protect her from Professor James Moriarty's henchmen, Mycroft pulled Mary Watson from a river. He was obviously informed by Sherlock of his plans to do so, as he was ready and waiting in a boat with Carruthers. Mycroft then took her to his home to be safe from Moriarty. Later, Sherlock used a breating device he had borrowed from Mycroft to survive after throwing himself and Moriarty from the top of the Reichenbach Falls.
Personality[]
Mycroft, like his brother, is analytical, highly intelligent and a fiercely cunning man in the British Secret Service. He is also arrogant and improper, reffering himself as being a second "Sherlock Holmes" when introduced to Watson. He also refused to shake Watson's hand when offered and tapping a pedestrian with his cane to get out of his way rather than simply ask and show courtesy.
However, Mycroft has positive traits despite of his arrogance, as he is very loyal to the crown and greatly cares about his younger brother and had an air of youth about him, still referring to Sherlock by his childhood nickname: 'Sherly'! He also displays strong trust and loyalty to Sherlock, as he went out of his way to recruit many man and save Mary Morstan from drowning in the river just because Sherlock had told him to do so. It is implied that Sherlock too trusts Mycroft to a considerable degree, as Mycroft was likely aware that his brother had the contingency plan of throwing both himself and Moriarty into the Reichenbach Falls should he fail to take down Moriarty in a brawl.
Behind the scenes[]
Fry's version of Mycroft is one of the few to appear anywhere near as 'portly' as the character is described in the original tales. Is, also, the most accurate version of Mycroft physically speaking, being the most closer version to be as portrayed in the books by Conan Doyle.