Your favorite pessimist Bojack is returning for a 6th and the final season. The animated show will bid farewell to Netflix after a long run, and it seems like it`s going to be one wild adventure from the looks of the trailer.

Bojack (Will Arnett) is in rehab and writing letters to Diane (Alison Brie). Always an unintentional jokester, he casually connects the art of writing letters with one of the most notorious serial killers. Meanwhile, Dianne and Princess Carolyn (Amy Sedaris) and a host of other characters deal with their personal turmoil as Bojack eventually starts to get over the travesty his life; while also championing the letter-writing form.

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Created by Raphael Bob-Waksberg, "Bojack Horseman" stars Will Arnett as the horse-headed BoJack. He was the star of the hit television show "Horsin` Around" in the `80s and `90s, now he`s washed up, living in Hollywood, complaining about everything, and wearing colorful sweaters. The voice cast boots of Will Arnett, Alison Brie, Amy Sedaris, Aaron Paul, and Paul F. Tompkins in pivotal roles.

The final season will is a two-parter, airing respectively on October 25 and January 31 on Netflix.