[9] His father, Ólafur Einarsson, was a member of the Icelandic national handball team.
[10] His sister, Björt Ólafsdóttir, is a former MP for Bright Future and served as the Minister for the Environment and Natural Resources in 2017.
[12][13][14][15] On 7 February 2004, while celebrating Keflavík's victory in the Icelandic Basketball Cup in Reykjanesbær, Fannar was assaulted by a 22-year-old man from Njarðvík.
The man hit him in the head with a glass, resulting in Fannar receiving multiple deep cuts in his face and losing consciousness from blood loss.
He lost 2.5 litres (0.66 US gal) of blood and required a three-hour operation to close the eleven deep cuts he suffered.