Barf (full name: Barfolomew) is the loyal sidekick of Captain Lone Starr and the dueratagonist in Spaceballs. He is portrayed by the late John Candy.
He is a mawg (half-man, half-dog) and an obvious parody of Chewbacca. Notably, in Russian translation "a mawg" was rendered as "chelobakka", a portmanteau of words "chelovek" (a man) and "sobaka" (a dog) also spoofing the name Chewbacca. Similar to this the German translation, which renamed "Barf" as Waldi, uses the term "Möter" which also is a combination of "Mensch" (man) and "Köter" (mutt).
While flying in the Eagle 5 with Lone Starr, the two of them get a call from Pizza the Hutt demanding 1,000,000 spacebucks. Soon afterward, King Roland of Planet Druidia asks Lone Starr to rescue his daughter, Princess Vespa, from Dark Helmet. Lone Starr and Barf agree to do so in exchange for 1,000,000 spacebucks.
Once Lone Starr gets in position, he and Barf jam Spaceball I's radar with a giant jar of raspberry jam, then Barf helps Vespa and Dot Matrix board the Eagle 5. Fighting ensues within Starr's ship with Lone Starr poking fun about how she's a Druish Princess (a play on the archetype Jewish Princess) and Vespa playing that stereotype perfectly. They then enter Hyperactive (parody of Star Wars' Hyperspace) with Dark Helmet using "Ludicrous Speed" in an attempt to catch up.
The Eagle 5 crash-lands on the Moon of Vega, leaving Lone Starr, Vespa, Barf, and Dot Matrix to try and survive the harsh desert land. Barf tries to act as a mediator between Lone Starr's and Vespa's arguments. Eventually, Dark Helmet kidnaps Vespa, so Barf and Lone Starr travel to Planet Spaceball and rescue her.
After Lone Starr rescues Planet Druidia, he and Barf receive news that Pizza the Hutt ate himself to death, meaning that they no longer owe him any money. However, after they return Vespa to King Roland, Lone Starr turns down the 1,000,000 spacebucks, as an expression of his love for her. He and Barf open a fortune cookie from Yogurt after getting gas for the Eagle 5, which reveals a message from him. Yogurt informs Lone Starr that the mysterious pendant around his neck is a royal birth certificate, proclaiming him a prince. With this news in hand, Lone Starr proposes to Vespa, and she accepts. Barf attends the wedding as Lone Starr's Best Man (well, Best Mawg, technically).