Posted on 02/01/2026 11:50:08 AM PST by PROCON
Seinfeld had quite a few memorable supporting characters who, time and time again, would cross paths with Jerry. And, for the most part, the interactions were more awkward or adversarial than pleasant. For instance, rival comedian Kenny Bania. Or Jack Klompus, his parents’ neighbor at Del Boca Vista. Then there’s Bryan Cranston’s Tim Whatley, dentist and re-gifter extraordinaire. Other examples include the vengeful Joe Davola and…Newman! And outside the aforementioned postal worker slash neighbor of Mr. Seinfeld, the best of these recurring characters is none other than Uncle Leo.

Uncle Leo is the type who is always there when you don’t feel like getting into a conversation. A long conversation, at that. But if you try to depart that droning, mostly one-sided conversation early, you’re rude. So where did this character originate? With a “Pony Remark.”
First off, Len Lesser brought such a gentleness to Uncle Leo that it was impossible to hate him, but it was easy to be annoyed by him. And it’s easy to see why, after Season 2’s “The Pony Remark,” he made at least one appearance per season up to and including the divisive “The Finale Part II” in Season 9. He’s the most endearing character outside the core four and Newman.
As mentioned in the intro, Uncle Leo (his preferred full name, going so far as to sign it on a package meant for Jerry) is a conversationalist. He’s just not a particularly interesting conversationalist, oscillating between pointless blathering gossip and complaints about mundane issues that are typically solved with ease. That is when he’s not talking about “Cousin Jeffrey,” who apparently is such an overachiever in the Parks Department he never even gets a chance to pop up in the show.
(Excerpt) Read more at comicbook.com ...
What about The Drake?
That’s what he gets for not paying for cable.
I heard that Castanza became a private detective after the show was finished.
Noticed everyone has a uncle named Tio.
You pull his teeth, he’s harmless as a heel hound. Always wanted to face down one of these pistol fighters they raise all the fuss about. Only way to handle them.
Captain Terrell: Not a hard man to track. Leaves dead men wherever he goes.
“They said they were sending over an Asian woman.”
Dying is no way to make a living.
Uncle Leo was great!
But “Jack Klompus, his parents’ neighbor at Del Boca Vista” was actually my brother-in-law for several years, Sandy Baron.
He had known Seinfeld for many years, helping him get a start in comedy. Later in his life he fell on tough times and Seinfeld helped him in return by getting him on his show.
Hey! I don’t like your demeanor.
Seinfeld, MASH, All In the Family, Cheers... were my favorite shows.
The absolute trash produced today is totally repulsive.
I haven’t turned the TV on in years.
.
.
.
Abe did not watch him.
Nasty habit, young man. You born in a barn?
Hate the Drake!
I remember that episode- “Leo, why are you so angry?”
I remember that episode- “Leo, why are you so angry?”
Wasn’t there an episode where Jerry tells Uncle Leo something like, “I hate anti-Semitism but now that I know you better, at least I understand it.”
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