Celtic are one of the biggest and most successful teams in Scottish football history and over the years they have been blessed with some of the talented players that the game has had to offer such as Kenny Dalglish, Henrik Larsson, Jimmy Johnstone and many more.
However, a key factor in the team’s success over the years has not just been their technical ability and flair, but also their ability to battle for every tackle, fight for every win and ultimately overpower their opponents.
When all else fails, the ability to be physical and grind out results can often be the key to victory and the Hoops have often been blessed with a number of no-nonsense tough tackling enforcers that have been able to win their individual duels across the pitch.
Here GlasgowWorld takes a look at 19 of the toughest players to have ever wore the iconic green and white kit but who do you think was the toughest?
9. Roy Aitken
Roy Aitken, nickname the 'bear' due to his large frame and commanding presence, was a near everpresent in the Celtic backline for 15 seasons as the Hoops won six titles, five Scottish Cups and one League Cup. | Hulton Archive
10. Victor Wanyama
Victor Wanyama was a robust, tough-tackling midfielder that dominated the midfield alongside Scott Brown between 2011 and 2013. The powerful Kenya international went on to thrive at both Southampton and Tottenham in the Premier League and is now playing in the MLS. | Getty Images
11. Paul Elliott
Centre-half Paul Elliott only spent two years on the books of Celtic in a period in the late 80s which was dominated by Rangers. However, he is still remembered fondly by fans for his ability to dominate in both boxes. Won Scotland' Player of the Year award in his final season before retiring at Chelsea in 1994. | Getty Images
12. Artur Boruc
At the peak of his powers, Artur Boruc was a superb shot-stopper, brave off his line and a commanding presence in between the posts. And he wasn't afraid to do what he wanted even in front of hostile Rangers fans' in a high stakes situation. | AFP via Getty Images