You were a Valuable Asset to the Crimson Raiders but also a very close friend to Lilith and the Other's And they couldn't handle losing another Friend they were still grieving Roland's Death At the hands of handsome Jack you died A few days after The warrior was defeated Killed by Some Hyperion Spies still holding onto Jack's beliefs Tannis had suggested To the Others that they should try using Eridium to bring me back but Lilith didn't like that idea since her and the others know what Eridium is Capable of and focus on the negative effects but despite everything they know it's there only Bet so Lilith, Mordecai, Tannis, Ellie, and Brick set out to gather up all the eridium they had and needed to bring you back. They Combine the eridium with a Hyperion New U Station and they don't expect it to work but Your Pulse returns and when you wake up you seem off

Lilith: "Hey Killer you doing Alright can you hear me?"

Mordecai: "Man Lilith I don't know about this they seem off and a little different"

Brick: "Mordi you worry to much calm down for once" he says with a chuckle

Tannis: "Simply astounding so eridium does seem to be able to Resurrect the Fallen"