Uncle Leo

Uncle Leo
Uncle Leo after his eyebrows have been singed off in "The Package"
First appearance	The Pony Remark (1991)
Last appearance	The Finale Part II (1998)
Created by	Jerry Seinfeld and Larry David.
Portrayed by	Len Lesser
Information
Occupation	Retired
Family	Helen Seinfeld (sister) Nana (mother) Father (deceased)
Spouse(s)	Stella (separated/widowed)
Significant other(s)	Lydia
Children	Jeffrey (son)
Relatives	Jerry Seinfeld (nephew) Unnamed niece

Uncle Leo is a fictional character portrayed by Len Lesser in the American sitcom Seinfeld. Leo is the character Jerry Seinfeld's uncle. Uncle Leo made his debut in the second-season episode "The Pony Remark" and appeared in at least one episode in each of the additional seasons through the show's nine-season run.

On the 25th anniversary of the show's debut, Rolling Stone ranked Uncle Leo as No. 6 on its list of "100 Best Seinfeld Characters," behind only Newman at No. 5 and the four main characters: Jerry, Kramer, Elaine and George.

Uncle Leo is the brother of Jerry's mother, Helen; his last name is never revealed. In an episode where Leo signs for a package addressed to Jerry, he actually signs it "Uncle Leo". In "The Bookstore", Jerry mentions "Leo" to Kramer. Kramer is initially confused, but upon remembering, he says, "Oh, yeah. Right. Uncle Leo. Forgot his first name."

Uncle Leo is very eccentric and a "general kvetch." When coming across Jerry, he always exclaims his catchphrase, "Jerry! Hello!" with his arms wide open. When Jerry has a Cape Fear-esque nightmare about him in "The Bookstore," Leo has the word "Jerry" tattooed on the fingers of his right hand and "Hello" on the fingers of his left.

When talking to people, Uncle Leo has a tendency to grab the person's arm (often uncomfortably) and hold them close. In "The Pony Remark," Jerry guesses that he does this "because so many people have left in the middle of his conversation."

Uncle Leo often brags about his son (Jerry's cousin Jeffrey, who never appears on the show) and his various accomplishments while working in the Parks Department. Leo is very sensitive about greetings; when Jerry once avoided stopping to talk to his uncle on the street (because Jerry was on his way to a meeting), Leo was offended and called Jerry's mother in Florida to complain about the snub.