Sam 'OB' O'Brien played by Darren Jeffries made his on-screen debut on the 16 June 1997 before leaving on 26 February 2008. He later made a brief return in July 2008 before leaving on 11 July 2008. While on the show O.B.'s storylines revolved around his friendship with and several relationships. The character has been described as iconic and is most notable for his "Classic comedy duo" status with Max. It was announced in October 2016 that Jeffries would make a permanent return to the series in November 2016.