Problem: Ugly Kid Joe is an American rock band from Isla Vista, California, formed in 1987. The band's name spoofs that of another band, Pretty Boy Floyd. Ugly Kid Joe's sound includes a range of styles, including rock, hard rock, funk metal and heavy metal. To date, Ugly Kid Joe have released four full-length albums, two compilation albums and two EPs.

Klaus revealed in an earlier interview on TV that the character was a caricature of Whitfield Crane, info confirmed later by its author Moish Brenman (Whitfield's high school friend and Roger Lahr's roommate in their teenagehood). Moish became the genius painter for customisation skateboards and was involved in plenty of projects about Arts. He died during the Stairway to Hell sessions and was replaced by Daniel Mercer for the coverdesigns.  The UKJ he created is a boy showing a middle finger and hiding a bottle of beer behind his back, wearing a blue baseball hat, a dirty white T-shirt, green Bermuda shorts, white socks and Doc marten shoes ( or sometimes sneakers too). Moish was supposed to be the official and unique drawer of the band once they were signed by Mercury Records, but for still unexplained reasons he was replaced by Marc Goldstein (so damn cool and Goddamn Devil pictures).  Some unknown pictures from Brenman about UKJ are still in existence. In a conversation on the UKJ forum in 2006, he revealed he wanted to build up a bunch of other characters deriving from the other band's members or their friends by the time he was the official drawer but that project has never been broacasted.  Plenty of pictures of the UKJ are made for free for the UKJ fans. They are coverdesigns bootlegs to replace those which are disappointing (Goddamn Cool or As ugly as it gets for instance) or for old or new bootlegs without sleeves. The very great majority of those sleeves are made by UKJ Fan Artists or Mercer-Moish's fans such as Karaokeman (who is more a customizer of other artists work), Kiplegends (Iamthewolf), Marcos Moura, Vivien Hup for the most current. Those pictures are not for lucrative activities and made as a tribute to Brenman or Mercer or for fun for fans and a warning message is always put on every bootleg about the consequences if that rule of 'NOT FOR SALE' would not be respected.

Is the character still in use?

Answer with quotes: Karaokeman (who is more a customizer of other artists work), Kiplegends (Iamthewolf), Marcos Moura, Vivien Hup for the most current.

Background: Petty was born October 20, 1950, in Gainesville, Florida, the first of two sons of Kitty (nee Avery), a local tax office worker, and Earl Petty, who worked in a grocery store. He had a brother, Bruce, who was seven years younger. His interest in rock and roll music began at age ten when he met Elvis Presley. In the summer of 1961, his uncle was working on the set of Presley's film Follow That Dream, in nearby Ocala, and invited Petty to watch the shoot.
Context: In 1988, Petty joined George Harrison's group, the Traveling Wilburys, which also included Bob Dylan, Roy Orbison, and Jeff Lynne. The band's first song, "Handle with Care", was intended as a B-side of one of Harrison's singles, but was judged too good for that purpose and the group decided to record a full album, Traveling Wilburys Vol. 1. A second Wilburys album, mischievously titled Traveling Wilburys Vol. 3 and recorded without the recently deceased Orbison, followed in 1990. The album was named Vol. 3 as a response to a series of bootlegged studio sessions being sold as Travelling Wilburys Vol. 2. Petty incorporated Traveling Wilburys songs into his live shows, consistently playing "Handle with Care" in shows from 2003 to 2006, and for his 2008 tour adding "surprises" such as "End of the Line" to the set list.  In 1989, Petty released Full Moon Fever, which featured hits "I Won't Back Down", "Free Fallin'" and "Runnin' Down a Dream". It was nominally his first solo album, although several Heartbreakers and other well-known musicians participated: Mike Campbell co-produced the album with Petty and Jeff Lynne of Electric Light Orchestra, and backing musicians included Campbell, Lynne, and fellow Wilburys Roy Orbison and George Harrison (Ringo Starr appears on drums in the video for "I Won't Back Down", but they were actually performed by Phil Jones).  Petty and the Heartbreakers reformed in 1991 and released Into the Great Wide Open, which was co-produced by Lynne and included the hit singles "Learning To Fly" and "Into the Great Wide Open", the latter featuring Johnny Depp and Faye Dunaway in the music video.  Before leaving MCA Records, Petty and the Heartbreakers got together to record, live in the studio, two new songs for a Greatest Hits package: "Mary Jane's Last Dance" and Thunderclap Newman's "Something in the Air". This was Stan Lynch's last recorded performance with the Heartbreakers. Petty commented "He left right after the session without really saying goodbye." The package went on to sell over ten million copies, therefore receiving diamond certification by the RIAA.
Question: Did he have any other success during this time in his career?
Answer: Petty and the Heartbreakers reformed in 1991 and released Into the Great Wide Open,

Question:
Johnny Young (born Johnny Benjamin de Jong; 12 March 1947) is a Dutch Australian singer, composer, record producer, disc jockey, television producer and host. Originally from the Netherlands, his family settled in Perth, Western Australia in the early 1950s. Young had a career in the 1960s as a pop singer and had a number one hit with the double-A-side, "Step Back" and "Cara-lyn" in 1966, and his profile was enhanced by a concurrent stint as host of the TV pop program The Go!!
After Young Talent Time, Young continued in entertainment, he worked as a radio disc jockey and occasionally performed live. In 1999 he produced Cavalcade of Stars for Foxtel including repackaging segments of Young Talent Time and showcasing new Australian bands.  In December 2000, Young relocated to Perth to become the breakfast host on Perth AM station 6IX. During 2001 to 2004, he periodically performed with Rowe, Buddy England (ex-The Seekers, The Mixtures) and Marcie Jones (Marcie and The Cookies) as the 'Legends of Sixties Rock' at venues across Australia - all four had appeared on The Go-Show. While living in Perth, Young established a new outlet for his Johnny Young Talent School franchise. In 2001, the 30th anniversary of Young Talent Time was celebrated by Network Ten with a special documentary, Young Talent Time Tells All, which was followed on 4 November by a reunion party for former cast members. Young attended with his daughter Anna - who had appeared on the show. Back in Perth, Young hosted The Pet Show on ABC Television in 2006.  On 27 October 2010, Johnny Young was inducted into the Australian Recording Industry Association (ARIA) Hall of Fame. On news of his impending induction Young said "I have always felt like the luckiest kid on the block to be able to continue working in the music industry for 50 years in so many areas when basically I am just a rock and roller. To receive this honour is the cherry on an amazing cake. I am very grateful to all those who supported and encouraged me." Young was inducted by Tina Arena, a former Young Talent Team member, who performed his song, "Here Comes the Star" as a musical tribute. Contemporary pop group, Short Stack performed Young's version of "Cara-Lyn"
Answer this question using a quote from the text above:

where did he occasionally perform live?

Answer:
he periodically performed with Rowe, Buddy England (ex-The Seekers, The Mixtures) and Marcie Jones (Marcie and The Cookies) as the 'Legends of Sixties Rock' at venues