32 years ago - Antonio Diego is born on the island nation of Santa Prisca, forced to serve his father's life sentence in Pena Dura.
24 years ago - 8-year-old Antonio kills a fellow prisoner for the first time. He begins having nightmares about a menacing bat, which will haunt him.
10 years ago - 22-year-old Antonio, the strongest specimen in Pena Dura, is used in the Venom experiments. He becomes Bane.
4 years ago - 28-year-old Bane escapes Pena Dura and makes his way to Gotham. He frees the prisoners of Arkham to torture Batman, then confronts him and breaks his back. He takes over Gotham's underground (battling Waylon Jones in the process), until Jean Paul Valley, acting as Batman, brings him in.
3 years ago - 29-year-old Bane escapes prison suffering severe withdraw from Venom & hunts the scientists that created the drug. He is chosen by Ra's Al Ghul as a new heir, but Talia refuses to accept him and he refuses to accept his place in the League of Assassins. In retaliation, Bane unleashes the Leagues bio-plague Contagion on Gotham, and destroys dozens of Lazarus Pits worldwide, until he is finally defeated by Bruce Wayne.
2 years ago - 30-year-old Bane is recruited into the Suicide Squad. He kills Atomic Skull when he goes berserk. and assumes defacto leadership of the team.
Bane, like Doomsday before him, was built for a very deliberate purpose. Chuck Dixon specifically designed him to be the guy to take out Bruce Wayne. How exactly that translated into 'roided luchador', I couldn't tell you.
Opinions on Bane are mixed. He's obviously a popular character, used all over the Batman universe, but in almost every version of the character you're seeing retellings of the original knightfall arc, where Bane famously broke Bruce's back. Some versions of the character have done a better job than others of moving on AFTER that arc, but in the actual comics he's always had a lingering vibe of "ok, so what now?" Bane has been in the secret six, became a sort-ol ally to Bruce... there was even a story line in there where they dabbled with the idea that he might be Bruce's long-lost half brother. Maybe the absolute best arc was when he associated with the League of Assassins and briefly usurped Bruce's role as the organization's heir apparent.
Here's what we know... Bane's fate is clearly bound to Bruce's, but even he doesn't know how or why. After knightfall, we absolutely used the idea of his association with Ra's, because somewhere in the future there is going to be some sort of reckoning between Bruce and Ra's, and the idea that Bane might be fated to be a part of it feels very correct. In the meantime, we've taken his association with the Secret Six and redirected it into the Suicide Squad, even made him part of the arc we're manufacturing where a new team lineup immediately implodes when Atomic Skull goes crazy. Bane killing him just feels like such a great utility for this character, and immediately sets him up as the team's defacto leader.