Leon Black is the brother of Loretta Black, a woman misplaced during Hurricane Edna, she and her Family move in with Larry David and Cheryl David. When the Blacks move in (Season 6) Leon Black just shows up and also takes refuge in the Davids house, even though he already lived in L.A. and never experienced Hurricane Edna.
Relationship with LarryEdit
At first Leon and Larry David aren't very close, but eventually Larry realizes that Leon's brawn can make up for Larry's wimpy attitude when dealing with tougher men. He uses Leon to confront guys he is afraid of, and in doing this, they become friends. Meanwhile, Larry and Loretta Black become romantically intertwined, but she leaves him after becoming convinced that Larry has cheated on her. After Loretta, her children and mother Auntie Rae leave his house, Larry asks Leon, "I guess this means you'll be...?" Leon replies, "Going upstairs to eat this f----- Chinese food in my f----- room," and continues to stay at the house, uninvited.
Leon regularly gives Larry romantic advice. In the episode Denise Handicapped when Larry is concerned about whether or not he successfully pleasured a handicapped woman, Leon says, "Did you bring it, Larry?" He also expects Larry to hide a married woman he is sleeping with in the episode Vehicular Fellatio. He says to Larry that since they're friends, Larry is just as responsible for the affair as he is. "You f----- her" Leon says, "We're intertwined in each other."