who is the special judge on america's got talent
America's Got Talent (season 12)
Demian Aditya appeared as a guest performer on Indonesia 's Got Talent . German Cornejo & Gisela Galeassi ( `` German Cornejo Dance Company '' ) appeared on and were the tango dancer winners of ¡ Q'Viva ! The Chosen in 2012 , performing after the show in Las Vegas with ¡ Q'Viva ! The Chosen Live . They also were guest artists in Buenos Aires at the Dance Again World Tour by Jennifer Lopez . Ezequiel Lopez ( `` German Cornejo Dance Company '' ) appeared on and was one of the malambo dancer winners of ¡ Q'Viva ! The Chosen in 2012 . Canion Shijirbat appeared on and was the runner - up of Mongolia 's Got Talent ( season 2 ) in 2016 . Nick Uhas was a houseguest on Big Brother 15 and was the second houseguest evicted from the house . Merrick Hanna auditioned for So You Think You Can Dance : The Next Generation . He made it into the top 40 at Dance Academy , but was eliminated before reaching the top 30 . He has also appeared as a lip sync battler on Nickelodeon 's Lip Sync Battle Shorties and on The Ellen DeGeneres Show . Artyon , half of the dancing duo Artyon and Paige , appeared as a lip sync battler on Nickelodeon 's Lip Sync Battle Shorties . Darci Lynne Farmer appeared on Little Big Shots in 2016 and on Little Big Shots ( UK TV series ) in 2017 . Billy and Emily England appeared on Britain 's Got Talent ( series 9 ) and reached the Semifinals . In 2008 , Emily was the runner - up on Big Brother UK : Celebrity Hijack , competing under the name of `` Emilia . '' Tony and Jordan ( `` The French Twins '' ) appeared on series 11 of La France a un incroyable talent ( the French version of Got Talent ) in 2016 . Chase Goehring appeared on The X Factor ( U.S. season 3 ) . Light Balance appeared on Britain 's Got Talent ( series 8 ) and reached the Semifinals . Junior and Emily appeared on Season 3 of America 's Got Talent , but were eliminated before the live shows . Shemika Charles appeared on Season 6 of America 's Got Talent , but was eliminated during Vegas week . Celine Tam appeared on Little Big Shots in 2016 and Britain 's Got Talent ( series 10 ) but had to drop out due to a visa issue . Vinny Grosso ( `` The Naked Magician '' ) previously appeared on `` Penn and Teller : Fool Us '' , performing the same routine as his AGT Audition , and successfully fooling the magic duo . The Quiddlers participated in the third season and appeared on I Can Do That , performing with Ciara and Nicole Scherzinger during their time on the show . Eric Jones previously appeared on `` Penn and Teller : Fool us , and he was successful in fooling them . Kyle Eschen & Xavier Mortimer also appeared on Fool Us ( Mortimer twice ) , but were unsuccessful in fooling Penn & Teller . Xavier Mortimer auditioned in Season 10 , but was eliminated at the judge cuts after receiving four buzzers . Pelican 212 appeared on Little Big Shots in 2016 . Kyle Eschen appeared on Season 3 , episode 2 of Penn & Teller : Fool Us , Masters of Illusion , and The World Magic Awards . Colin Cloud appeared on Britain 's Got Talent in 2012 however did not make it through to the live semifinals . Cloud also appeared on Season 1 of Penn and Teller Fool Us . His trick did n't however fool Penn and Teller . At both BGT and Penn and Teller Fool Us he went under his real name Colin McLeod .
Demian Aditya appeared as a guest performer on Indonesia 's Got Talent . German Cornejo & Gisela Galeassi ( `` German Cornejo Dance Company '' ) appeared on and were the tango dancer winners of ¡ Q'Viva ! The Chosen in 2012 , performing after the show in Las Vegas with ¡ Q'Viva ! The Chosen Live . They also were guest artists in Buenos Aires at the Dance Again World Tour by Jennifer Lopez . Ezequiel Lopez ( `` German Cornejo Dance Company '' ) appeared on and was one of the malambo dancer winners of ¡ Q'Viva ! The Chosen in 2012 . Canion Shijirbat appeared on and was the runner - up of Mongolia 's Got Talent ( season 2 ) in 2016 . Nick Uhas was a houseguest on Big Brother 15 and was the second houseguest evicted from the house . Merrick Hanna auditioned for So You Think You Can Dance : The Next Generation . He made it into the top 40 at Dance Academy , but was eliminated before reaching the top 30 . He has also appeared as a lip sync battler on Nickelodeon 's Lip Sync Battle Shorties and on The Ellen DeGeneres Show . Artyon , half of the dancing duo Artyon and Paige , appeared as a lip sync battler on Nickelodeon 's Lip Sync Battle Shorties . Darci Lynne Farmer appeared on Little Big Shots in 2016 and on Little Big Shots ( UK TV series ) in 2017 . Billy and Emily England appeared on Britain 's Got Talent ( series 9 ) and reached the Semifinals . In 2008 , Emily was the runner - up on Big Brother UK : Celebrity Hijack , competing under the name of `` Emilia . '' Tony and Jordan ( `` The French Twins '' ) appeared on series 11 of La France a un incroyable talent ( the French version of Got Talent ) in 2016 . Chase Goehring appeared on The X Factor ( U.S. season 3 ) . Light Balance appeared on Britain 's Got Talent ( series 8 ) and reached the Semifinals . Junior and Emily appeared on Season 3 of America 's Got Talent , but were eliminated before the live shows . Shemika Charles appeared on Season 6 of America 's Got Talent , but was eliminated during Vegas week . Celine Tam appeared on Little Big Shots in 2016 and Britain 's Got Talent ( series 10 ) but had to drop out due to a visa issue . Vinny Grosso ( `` The Naked Magician '' ) previously appeared on `` Penn and Teller : Fool Us '' , performing the same routine as his AGT Audition , and successfully fooling the magic duo . The Quiddlers participated in the third season and appeared on I Can Do That , performing with Ciara and Nicole Scherzinger during their time on the show . Eric Jones previously appeared on `` Penn and Teller : Fool us , and he was successful in fooling them . Kyle Eschen & Xavier Mortimer also appeared on Fool Us ( Mortimer twice ) , but were unsuccessful in fooling Penn & Teller . Xavier Mortimer auditioned in Season 10 , but was eliminated at the judge cuts after receiving four buzzers . Pelican 212 appeared on Little Big Shots in 2016 . Kyle Eschen appeared on Season 3 , episode 2 of Penn & Teller : Fool Us , Masters of Illusion , and The World Magic Awards . Colin Cloud appeared on Britain 's Got Talent in 2012 however did not make it through to the live semifinals . Cloud also appeared on Season 1 of Penn and Teller Fool Us . His trick did n't however fool Penn and Teller . At both BGT and Penn and Teller Fool Us he went under his real name Colin McLeod .