Gibson is known for his tough play as a back-pocket defender. He was instantly recognisable because of his afro hairstyle before he cut it. Josh has direct links to Barbados, where his father was born. He also attended Trinity Grammar School in Kew, a school which is renowned for producing great footballers, like Wayne Schwass and Luke Power.
A left footer, he is originally from Oakleigh Chargers and played 10 matches with the Kangaroos in 2006.
On 3 June 2007, he suffered a head injury in the bathroom at his home as he was preparing for training.. After initially being ruled out of football for the remainder of the season,he was able to return to the AFL in Round 21 and was able to shut out Lance Franklin who had kicked seven goals the previous round.