Mikael Lustig joined Celtic in 2012-13 from Rosenborg BK and has since established himself as a bit of a cult hero at the club.
The Big Swede has often played match-winning performances and has 10 goals to his name for the club.
To celebrate his birthday, the official Twitter account posted photos of the right-back from various Cup wins and training sessions spanning across his career so far at the club.
Affectionately known as the mad man of the team, Lustig is often seen playing pranks and joking around his teammates. The photos effectively capture his larger than life persona.