There is more than one artist with this name.
1) Joker is a twenty-year-old programmer/producer from Bristol, UK. Currently producing some of the freshest, most innovative Grime instrumentals on the scene, but equally embraced by the Dubstep world, he mixes influences from Dr Dre-style G-Funk and video game chip music as well as UK bass styles. 2) ＪＯＫＥＲ was a visual kei band formed in 2002. They disbanded in 2005. 3) Joker is a Taiwanese Indie Band from Taichung, Taiwan. 4) Joker is a popular 4-piece contemporary covers band based in Plymouth, England