The Big Bang Theory Wiki

Michael Hofstadter is the younger brother of Leonard Hofstadter and their sister. He is a tenured law professor at Harvard University. His mother Beverly mentioned him to Howard Wolowitz when she visited ("The Maternal Capacitance"). She describes him as being more successful than Leonard.

Leonard has said that Michael is eight inches taller than he is because of the nurturing and attention he received from their mother.

He was stated to have been engaged in "The Maternal Congruence" to a NJ judge.

In "The Pants Alternative", it is revealed that when Leonard was young he felt obligated to give back a ribbon he won for an experiment seeing if lima beans grew better with classical music. His mother had pointed out that his younger brother Michael had already done a lima-bean-growing experiment (do they grow worse with rock ‘n’ roll music?).

In "The Maternal Combustion", Beverly says that Michael recently argued a case before the Supreme Court.

In "The Spock Resonance", Leonard reveals that Michael was mean to him, showing they don't have a good relationship.

In "The Celebration Experimentation", Beverly mentions that Sheldon and both his brother and sister were invited to the celebration of her 60th birthday. He didn't even know about it.

In "The Explosion Implosion", Beverly mentions that of all her children's spouses, Penny is her favorite. This implies that Michael is now married, most likely to the New Jersey judge.

In "The Celebration Reverberation", Michael sends Leonard his Christmas letter and telling about all his accomplishments, including building a hospital in Rwanda. This causes Leonard to spiral about his own lack of accomplishments.

In "The Sibling Realignment", when Sheldon asked Leonard if Michael is an unspeakable abomination, Leonard said that he laughs at his own jokes, but otherwise he's okay.

In "The Procreation Calculation", when Leonard suggests that he may be the last of the Hofstadter line (after learning Penny doesn't want kids), Sheldon reminds him of his brother Michael and his sister having kids. Realizing this, Leonard sees it doesn't matter if he has kids since his siblings' children will carry on the family line.