Mycroft Holmes in "The Greek Interpreter", his blundering approach to the case nearly costs the client his life. Mycroft resembles Sherlock, but is described in "The Greek Interpreter" as being "a much larger and stouter man". In "The Bruce-Partington Plans", the following description is given: Mycroft spends most of his time at the Diogenes Club, which he co-founded. He is the only character to refer to Sherlock exclusively by his first name. Mycroft Holmes has been portrayed many times in film, television, and radio adaptations of the Holmes stories. The character has been used many times in works that are not adaptations
Sherlock Holmes pastiches also makes a minor but significant appearance in Warren Ellis and John Cassaday's comic book series "Planetary". Michael P. Hodel and Sean M. Wright presented a mystery-adventure "Enter the Lion: A Posthumous Memoir of Mycroft Holmes" (1979) in which Sherlock's older brother prevents a conspiracy involving a return of the American "colonies" to Great Britain. Sherlock makes appearances with Victor Trevor (from The Adventure of the Gloria Scott), Professor Moriarty and Moriarty's father. Carole Nelson Douglas has written a spin-off series centring upon Holmes' nemesis Irene Adler. The first book is titled "Good Night, Mr. Holmes" and takes place concurrently