official trailer for season 2 of BoJack Horseman BoJack's back -- and this year... He's really trying to be a better Horseman. The Netflix original series BoJack Horseman returns for an all new season July 17. Only on Netflix. Starring Will Arnett, Amy Sedaris, Alison Brie, Paul F. Tompkins, and Aaron Paul -- with guest star Lisa Kudrow.