Background: The Joker is a fictional supervillain created by Bill Finger, Bob Kane, and Jerry Robinson who first appeared in the debut issue of the comic book Batman (April 25, 1940), published by DC Comics. Credit for the Joker's creation is disputed; Kane and Robinson claimed responsibility for the Joker's design, while acknowledging Finger's writing contribution. Although the Joker was planned to be killed off during his initial appearance, he was spared by editorial intervention, allowing the character to endure as the archenemy of the superhero Batman. In his comic book appearances, the Joker is portrayed as a criminal mastermind.
Context: The Joker was one of the few popular villains continuing to appear regularly in Batman comics from the Golden Age into the Silver Age, as the series continued during the rise in popularity of mystery and romance comics. In 1951, Finger wrote an origin story for the Joker in Detective Comics #168, which introduced the characteristic of him formerly being the criminal Red Hood, and his disfigurement the result of a fall into a chemical vat.  By 1954, the Comics Code Authority had been established in response to increasing public disapproval of comic book content. The backlash was inspired by Frederic Wertham, who hypothesized that mass media (especially comic books) was responsible for the rise in juvenile delinquency, violence and homosexuality, particularly in young males. Parents forbade their children from reading comic books, and there were several mass burnings. The Comics Code banned gore, innuendo and excessive violence, stripping Batman of his menace and transforming the Joker into a goofy, thieving trickster without his original homicidal tendencies.  The character appeared less frequently after 1964, when Julius Schwartz (who disliked the Joker) became editor of the Batman comics. The character risked becoming an obscure figure of the preceding era until this goofy prankster version of the character was adapted into the 1966 television series Batman, in which he was played by Cesar Romero. The show's popularity compelled Schwartz to keep the comics in a similar vein. As the show's popularity waned, however, so did that of the Batman comics. After the TV series ended in 1968, the increase in public visibility had not stopped the comic's sales decline; editorial director Carmine Infantino resolved to turn things around, moving stories away from schoolboy-friendly adventures. The Silver Age introduced several of the Joker's defining character traits: lethal joy buzzers, acid-squirting flowers, trick guns, and goofy, elaborate crimes.
Question: Did Joker appear in other TV shows?
Answer: 

Background: All Time Low is an American rock band from Towson, Maryland, a suburb of Baltimore, formed in 2003. The band currently consists of lead vocalist and rhythm guitarist Alex Gaskarth, lead guitarist and backing vocalist Jack Barakat, bassist and backing vocalist Zack Merrick and drummer Rian Dawson. The band's name is taken from lyrics in the song "Head on Collision" by New Found Glory. The band consistently tours year-long, has headlined numerous tours, and has appeared at music festivals including Warped Tour, Reading and Leeds and Soundwave.
Context: Formed while still in high school in 2003, All Time Low began covering songs by pop punk bands such as Blink-182. The band's line-up included Alex Gaskarth on vocals, Jack Barakat on guitar, TJ Ihle on lead guitar and backing vocals, Chris Cortilello on bass, and Rian Dawson on drums. Cortilello and Ihle left the band, resulting in the band laying dormant until Zack Merrick joined on bass and Gaskarth picked up guitar. They released a four-song EP in November before signing to Emerald Moon Records in 2004. They released their second EP, titled The Three Words to Remember in Dealing with the End EP later that same year. The band released their debut studio album, The Party Scene, in July 2005.  In December, it was announced that the band was no longer signed, but were attracting attention from a number of record labels. In late 2006, the band performed a showcase for John Janick the founder of record label Fueled by Ramen. They were not signed because Cute Is What We Aim For had recently been taken on by the label, which was not in a position to sign another band at the time. The band was brought to the attention of Hopeless Records by fellow touring band Amber Pacific; on March 28, 2006, it was announced that All Time Low had signed with Hopeless. The band said in an interview that they were starting to get serious about music while in their senior year of high school; following their graduation, the members focused on the group full-time, and released the Put Up or Shut Up EP in July. The EP entered the Independent Albums chart at No. 20 and the Top Heatseekers at No. 12.  All Time Low began a busy tour in support the EP in late 2006. After the tour, the band began writing material for their second studio album.  In the summer of 2007, All Time Low played the Vans Warped Tour on the Smartpunk Stage. They made their live debut in the UK in late 2007 supporting Plain White T's. All Time Low released their second studio album So Wrong, It's Right in September 2007. It peaked at No. 62 on the Billboard 200 and No. 6 on the Independent Albums chart. The second single from the album, "Dear Maria, Count Me In", which was written about a stripper, became the band's first single to reach the charts and peaked at No. 86 on the Pop 100. In 2011, the single was certified Gold for 500,000 shipments.  In early 2008 the band completed their first headlining tour, the Manwhores and Open Sores Tour with opening acts Every Avenue, Mayday Parade, and Just Surrender.  Following the release of So Wrong, It's Right, All Time Low quickly gained popularity, eventually making their TRL debut on February 12, 2008. They have also been featured on MTV's Discover and Download and Music Choice's Fresh Crops, and have been added to both MTV's Big Ten and MTV Hits playlists. On March 7, 2008, the band made their live television debut on Jimmy Kimmel Live! and then performed live at the mtvU Woodie Awards.  From March 2008 to May 2008, they co-headlined the AP Tour 2008 with The Rocket Summer; supported by acts such as The Matches, Sonny Moore, and Forever the Sickest Kids. In May 2008 they played at the Give It a Name Festival. Also in May 2008, they co-headlined a UK tour with Cobra Starship. In July 2008, the band headlined the Shortest Tour Ever with supporting acts Hit the Lights, Valencia, and There for Tomorrow. From mid-July to mid-August they played the 2008 Vans Warped Tour. They ended 2008 with their headlining tour, the Compromising of Integrity, Morality & Principles in Exchange for Money Tour with Mayday Parade, The Maine, and Every Avenue.  In December 2008, All Time Low was named "Band of the Year" by Alternative Press magazine and featured on the cover of their January 2009 issue.
Question: Did they ever collaborate with any other bands to perform?
Answer:
In late 2006, the band performed a showcase for John Janick the founder of record label Fueled by Ramen.