Son of Noah and Astrid.

S3E7 - Astrid hosts Chaim's bris at Moishe and Shirley's place.

S5E1 - Astrid, Noah, and Chaim attend family thanksgiving at Moishe and Shirley’s house in Queens. Astrid and Noah continually delighted with Chaim, in often disruptive ways.

S5E2 - At Midge's apartment, Rose calls Noah at his job, and after some small talk about Chaim, she asks him if he can authorize a raid on the Matchmaker Mafia.

S5E7 - Noah and Astrid visit the Weissmans for breakfast, with Chaim in tow. They mention that they are trying for another child, and once again struggling to conceive. Abe is freaking out about Ethan’s supposed idiocy, leading Astrid to freak out that she’ll ruin her own daughter, and Noah to corroborate the Weissman first-born male genius theory in the face of Midge and Joel’s skepticism.

KRINSKY: And how did you pick the name, Astrid?
ASTRID: Well, first name “Chaim” for Abe's father, middle name “Christian” for my grandfather.
KRINSKY: It's unusual. The combination.
– S3E7

ROSE: How's Chaim? How's my baby boy?
NOAH: (over phone) Oh, he's just the greatest little man on the planet. You should have seen the other day, he was playing with a basketball, but he's so tiny, he rolled right over the top of it and did a complete somersault.
ROSE: (chuckles) I wish I'd seen that.
NOAH: The ball landed on top of him. He never let go of it. It was too cute.
– S5E2

7. Marvelous Radio (uncredited)

1. Go Forward (uncredited)
7. A House Full of Extremely Lame Horses (uncredited)

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