Wolverine is one of Marvel's favorite heroes... 1 / 9
But even fans don't know about his GREATEST battle. 2 / 9
Marvel has only now revealed Wolverine's secret curse. 3 / 9
Every decade, he must do battle with 'The Truth'... 4 / 9
A demon who wishes to make a new Hell on Earth. 5 / 9
Wolverine only told the X-Men in the 1990s. 6 / 9
When THEY try to help... Cyclops instantly dies. 7 / 9
Proving why Wolverine bears the burden alone... 8 / 9
And explaining his permanent bad mood, too. 9 / 9