- Number: 203
- Position: Lock
- Born: 08/05/84
- Height: 198
- Weight: 116
- Province: Bay of Plenty
- Provincial Caps: 82
- Provincial Points: 40
- Provincial Debut: 2007 v Hawkes Bay
- Blues Debut: 2013 v Hurricanes
- Blues Caps: 18
He was a mobile lineout forward with a strong running game. Culum, cousin of All Blacks lock Brodie Retallick, wais known for his ability to execute at the set piece and as a hardworking leader in the team.
Culum was a member of the Blues squad that played against France in 2013, which did not contribute to his total Super Rugby caps.
He has 47 Super Rugby caps, including caps with the Chiefs and Highlanders.
At the end of 2015, Culum announced that he would be joining the Melbourne Rebels on a two-year contract.