|Season 1, Episode 4|
|Air date||September 20, 2021|
Karen and Benji is the fourth episode in the FX on Hulu T.V. series, Y: The Last Man. It aired on September 20, 2021.
On Jennifer's orders, Yorick and Agent 355 search for a geneticist who can unravel the mystery of how he survived. Meanwhile, Hero and Sam encounter a dangerous group of women.
- Ben Schnetzer as Yorick Brown
- Diane Lane as Jennifer Brown
- Olivia Thirlby as Hero Brown
- Ashley Romans as Agent 355
- Amber Tamblyn as Kimberly Cunningham
- Marin Ireland as Nora Brady
- Diana Bang as Dr. Allison Mann
- Elliot Fletcher as Sam Jordan
- Juliana Canfield as Beth Deville