Originally from Tasmania, Grima played for the Tassie Mariners, South Launceston, the Tasmanian Devils and Central District, including in their 2007 SANFL premiership team.
[1] Grima impressed in early training sessions and looked in line for a promotion before hyper-extending his knee in a marking exercise.
[1] Despite this injury setback, North Melbourne promoted Grima to the senior list before the start of the 2009 season[2] and the versatile defender was quick to show his potential, holding down a spot at full-back for North's reserves team, Werribee in the VFL in the early part of the season.
[4] Grima scored his first goal in AFL football on Saturday, 17 August 2013 against Essendon at Etihad Stadium.
Grima has appeared as a guest presenter on Fox Footy's light entertainment television series Bounce.