Intergalactic Krewe of Chewbacchus

The Intergalactic Krewe of Chewbacchus is a science fiction–themed Mardi Gras krewe, or parade organization, that also features fantasy and horror groups, among other fandoms. Based in New Orleans, Louisiana, as of the 2019 parade, the Intergalactic Krewe of Chewbacchus has over 2500 dues-paying members who call themselves "ChewbacchanALIENs" or "Chewbs." 
It describes its mission as "to save the galaxy by bringing the magical revelry of Mardi Gras to the poor, disenfranchised, socially awkward and generally weird masses who may have never had the opportunity to participate in a Mardi Gras Parade Organization," and aims to "elevate all aspects of Fandom and celebrate Carnival in our own unique way." In short, "saving the galaxy, one drunken nerd at a time!" 
History.
The group was founded by Ryan S Ballard and Kirah Haubrich in the fall of 2010 when the two were at The Saturn Bar. They were soon joined by local attorney Brett Powers, and together they comprise the original three "Overlords" of the Krewe. Chewbacchus marched for the first time during Mardi Gras 2011 near the Uptown parade route on "Bacchus" Sunday as a satiric mashup of Bacchus, the Roman god of wine, and Chewbacca, the Wookiee from "Star Wars". 
Parade themes and royalty.
Mardi Gras krewes select a new theme for their parades each year and a new king and/or queen to reign over them. Chewbacchus often selects people from the entertainment industry and creates playful titles for its royalty, as listed below.
Floats and throws.
Mardi Gras krewes often ride on trailers, vehicles, or floats, but Chewbacchus is a walking krewe, with a "contraptions" only policy. Contraptions are pushed (human-powered) rather than pulled by truck or tractor, and they do not have riders. This provides a safer experience for members and also allows contraptions to roll down narrower streets. All of the Krewe's parade contraptions make an effort to be environmentally friendly, made with recycled materials. These contraptions are pushed, pedaled, or pulled on frames of bicycles, homemade trailers, and shopping carts.
Though throws—"Mardi Gras" beads are probably the best known traditional throw—usually produce much plastic waste, Chewbacchus actively discourages packaging and requires all members to dispose of their trash responsibly on parade night. Chewbacchus is also known for their unique, handmade throws created by individual members. These highly prized items are sought by parade attendees and can feature the mother krewe's annual theme, a subkrewe annual theme, or a subkrewe in general.
Issues and parades.
The Intergalactic Krewe of Chewbacchus is remarkable for its rapid pace of growth and popularity among local New Orleanians, gaining momentum from a small core group in its first few weeks to over 300 dues-paying members in its first year. Membership grew to 400 members in 2012. Over 500 dues-paying members marched in the 2013 parade and estimates place audience attendance at approximately 20,000 people. By 2016, membership reached over 1200 ChewbacchanALIENs, and in 2018, they had over 2600 dues-paying members.
One of the reasons for the rapid growth of Chewbacchus is the open nature of the parade—anyone can join for a relatively small fee, as compared to other krewes that can be invitation-only. Chewbacchus is known as of the "downtown" or "downriver" parades, named because its route is down the river from the "Uptown" St. Charles Avenue route. Downtown/Downriver parades began in the first decade of the 21st century, and they generally are open to a wider membership than traditional krewes. Their membership is fairly young, on average, and their parades are satirical, featuring parody and pastiche. 
Hoaxes.
The Intergalactic Krewe of Chewbacchus is responsible for some notable hoaxes and publicity stunts and has been praised for its clever pranks. It kicked off its 2012 season with a guerrilla marketing campaign centered on an elaborate Bigfoot hoax by a fake organization, the New Orleans Bigfoot Society (N.O.B.S.), that claimed that Sasquatch lurked in New Orleans City Park. After generating controversy among both the media and the Bigfoot research community, the creature was eventually revealed to be a "Drunken Wookiee". 
During the summer of 2012 the Intergalactic Krewe of Chewbacchus expanded its fan base beyond Science Fiction to include Fantasy and Horror and announced it with a publicity stunt by organizing a fake protest by the "Mystik Krewe of P.U.E.W.C. (People for the inclusion of Unicorns, Elves, and Winebots in Chewbacchus)" at its second annual Alien Beach Party at Tipitina's. In late November 2012, the krewe was responsible for a prank website that quickly drew the ire of NASA by announcing that the Curiosity rover had located Mardi Gras beads on Mars and that the famous Martian "face" was in fact a Wookiee temple. As a gesture of goodwill the Overlords of Chewbacchus offered the entire Mars Rover team free memberships in the Krewe.
Date Changes & Future Dates.
Chewbacchus originally rolled on Bacchus Sunday, the Sunday immediately before Fat Tuesday, on Bacchus's Uptown route. In 2013, the krewe changed their route to the Marigny/Bywater neighborhood and rolled on the 2nd Saturday before Mardi Gras. In 2019, due to increased size, the City of New Orleans asked the krewe to choose an earlier date to have full access to law enforcement and other resources. To avoid competition with Krewe du Vieux, the Intergalactic Krewe of Chewbacchus moved to the 4th Saturday before Mardi Gras, solidly outside of city-designated Carnivale season. This change made them the first large parade during the month before Mardi Gras Day.