We have seen Wladimir Klitschko win, lose and rule the heavyweight division, but just how well do you know 'Steelhammer'?
In our unique documentary, we will unravel just what makes the Ukrainian tick, who has been behind him and what still drives him on ahead of fighting Anthony Joshua at Wembley Stadium, live on Sky Sports Box Office on April 29.
'Steelhammer' will give you an insight into what Joshua is up against in the shape of Klitschko, focussing on some vital aspects and crucial influences.
Tune it to Sky Sports 1 at 6pm, to find more about key figures in his life...
Emanuel Steward - just how the late, great trainer played a pivotal role in getting him to the very top.
David Haye - was the man harassing him for months to get a fight and was then humbled in the ring.
Tyson Fury - has left him with another loss on his record but we look back at just how Klitschko has bounced back before.