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Leo is an imaginary character only mentioned in Live Fast, Diane Nguyen, in Season 1.


Leo is a pen pal that Diane frequently exchanged letters with when she was in high school. While Diane believed she was writing to a real person, Leo was in fact made up by her brothers, who wrote the letters as part of a cruel joke. They pretended Leo was a sensitive boy from Cambridge.


Season 1[]

In Live Fast, Diane Nguyen, Diane's brothers tell BoJack about the "Cryanne video" where they wrote letters to Diane from an imaginary pen pal named Leo and then hired a hobo to take Diane to homecoming and got Diane's reaction on tape.

BoJack remarks that's a good prank and Diane says she was humiliated. Tommy then says it's nice they can all laugh about this and Diane says her therapist thinks the same thing. Diane then tells them she's going to the funeral home and asks the brothers if they want to come and they refuse. Diane then takes BoJack with her to the funeral home.

After Diane makes arrangements to throw her father a funeral, none of her family shows up, and her father's corpse is absent. It turns out her family is lounging at a bar and had chummed their father's corpse with the intent to throw his remains in the face of their hated baseball rival team's star, Derek Jeter.

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BoJack giving Diane his letter from "Leo"

Calling Diane a big shot for getting upset at their low expectations, BoJack tactlessly defends Diane by bluntly describing her career and living situation, saying she is not a big shot. Diane then flies into a rage and drives off with the truck holding her father's chummed remains.

BoJack finds Diane at the city dump, where he consoles her by telling her the ways he appreciates her. He also apologizes to her for what he said about her to her family at the bar. She responds with "Well, it's all true isn't it?"

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Diane reading BoJack's "Leo" letter.

He then hands her a letter from "Leo" the same pen pal her brothers made up to play a cruel prank on her when she was a teenager, claiming that he found it at the bar. In it, "Leo" tells Diane he appreciates how she's always organized to go places, chews gum on airplanes so that her ears don't pop, and brings her own bags to the grocery store.

BoJack then reassures Diane that she does not need to find closure or appreciation from her family since they are horrible to her and that she should concentrate on moving forward and focusing her life on where she's living and simply not come back to her family.


In BoJack's letter from "Leo" in Live Fast, Diane Nguyen the following things are revealed about Diane:

  • She brings her own bags to the grocery store.
  • She chews gum on airplanes so her ears won’t pop.
  • She's always organized to go places.