|Family|| Helen Seinfeld (Wife)|
Jerry Seinfeld (Son)
Uncle Leo (Brother-In-Law)
|First Appearance||"The Stake Out"|
|Last Appearance||"The Finale"|
|Former Occupations||Inventor and Salesman of "The Executive Raincoat"|
|Portrayed By|| Barney Martin|
Morty made a living selling raincoats under a man named Harry Fleming for 38 years, and considers his invention of 'the beltless trenchcoat' (also called 'the executive') his greatest accomplishment. Morty refuses to let Jerry pay for a meal anytime they go out to eat, even if he has no money to pay the bill. He always sticks up for Jerry when he feels like his son is being slighted, even when Jerry himself isn't bothered at all. (The most notable instance of this was in "The Pen".) He hates velcro because he can't stand the tearing sound it makes when separated.
He and Helen are retired and have lived in a series of condos in Florida, the longest-lasting of which has been Del Boca Vista. He was the president of the tenant's board of The Pines of Mar Gables for many years, until Jerry bought him a Cadillac (in "The Cadillac"), arousing suspicion among his neighbors that he was stealing from the board coffers. He was impeached and resigned when the tie-breaking voter Mabel Choate turned against him upon remembering that Jerry had stolen a loaf of Marble Rye bread from her (in a previous episode). His impeachment scene included a parody of Richard Nixon's famous wave.
In "The Finale, Part 2," Morty and Helen attend the trial of Jerry, Elaine Benes, George Costanza, and Cosmo Kramer in Latham County. When the four of them are found guilty, Morty is seen comforting Helen.
- Morty was originally played by Phil Bruns, who appeared in only the second episode. After that episode, Larry David decided that the character as played by Bruns was too laid back, and felt Jerry should have a more crotchety dad. By the time Morty made his second appearance (in Season Two's "The Pony Remark"), the role had been recast with Martin. When the show went into syndication, Larry David wanted to reshoot Bruns's scenes with Martin (as he had done with the two actors playing Frank Costanza), but decided against the idea because the Bruns episode was too far in the past, and the differences in the other actors' ages would be noticeable.
- Larry David's father, Mortimer David of Sunrise, Florida, recently claimed that the character Morty was based on him.
- "Look, I got a few good years left. If I want a Chip Ahoy, I'm having it."
- "I sold raincoats in the garment district for thirty-eight years."
- "Cheap fabric, and dim lighting. That's how you move merchandise."
- “You know, Jack? Do me a favor, will you? Take the pen and the scotch tape and get the hell out of here!”
- "Low flow? I don't like the sound of that."
- "My wallet's gone! My wallet's gone!"