The Wacky Wario Bros.: Waluigi Origins is the 6th episode of The Wacky Wario Bros. It marks the return of the series after over a year of absence, as only one video of the series appeared in 2015.
Waluigi was banished from "The Waa Kingdom" after committing many crimes, and after meeting Wario with a stolen Gold Bowser head, they fought for it while trying to escape from The Police and Bowser. This is the story of how Wario and Waluigi met and became "The Wacky Wario Bros.".
At "Waa" kingdom, where the citizens pretty much says nothing but "Waa!" However, everybody is kind and caring for each other. However, one day, Waluigi, a bad guy, commits a crime, pushing a person into the lake. Waluigi is then sent to court, where Mayor Waa tells him of all the crimes he has committed. He then asks what Waluigi has to say for all these crimes, only for the criminal to rap, "F*** the police coming straight from the underground!" As a result, Mayor Waa gives Waluigi a punishment, which is exile. Therefore, Waluigi is sent away from his home kingdom on a broken raft, never to return.
Meanwhile, in the Mushroom Kingdom at Wario's house, Wario is seen sleeping on his couch, and a screen is showing a program on Animal Planet. On that show, two Luigi Dolls are trying to mate with each other. While mating, one Luigi Doll proceeds to make a sound very annoying noise, waking up Wario from his sleep and causing him to fall off the couch. When Wario recovers, he looks at the TV and finds the program playing. He then changes the channel, which proceeds to show a news report about a man touching a Toad's butt. Wario changes the channel once more, which switches to a channel called The Bowser Channel.
Bowser Jr. reports to the viewer his Bowser's stone made in gold. Wario thinks he win & he see Koopa Troopas army singing Barbie Girl. Wario stole Koopa Shells & picking Gold Bowser, but Gold Bowser head fall down. Suddenly Bowser appears in bottom of Wario. Then Wario screams like a Barbie Girl.
He suddenly starts running. Meanwhile, The Police sees Waluigi & he starts to chase him, but Wario fell into this boat. And he start to fights, then he suddenly be chased & driving Old Man Hobo car around the town. But Old Man Hobo car fells down. Then he tells Waluigi let ice cream falls into the water & sending Wario fells into Peach electronics boat owned by Toadsworth. In present day he seen Wario as big brother & throws Waluigi hat into Bowser face & The Police starts to arrest Bowser and the episode ends with the brothers walking across the street.