William Adams Jr is a well known rapper in the band Black Eyed Peas which he founded in 1998. The group did not come to prominence until hit 'Where Is The Love' was released in 2001 with new band member Fergie.
His producer credits span a range of artists including Michael Jackson, Justin Timberlake and recently Cheryl Cole. He has his own range of clothing and has expanded into acting, voicing Moto Moto in Madagascar: Escape 2 Africa.
will.i.am is one of the four judges on BBC reality show The Voice UK.