Ok, if you have lazarius pit on the field and say your ra's al ghul is stunned and so is bane. During the recovery step you recover bane. Can you use lazarius pit ( the effect that says "target character cannot be koed this turn") on Ra's so that he doesnt get Koed. If so would he becomed non-stunned again even though you already recovered bane

It may help to clear up the way in which normal recovery works. After all players are done playing effects in the recovery phase, we go to the wrap-up; first, there's the endurance check to see if any players lose. Next, each player has the option to choose a character they control; the chosen characters are then simultaneously recovered. After recovery is done, all stunned characters are KOed.

Lazarus Pit can stop a character from being KOed, protecting it from this last bit. But if the character wasn't recovered, it will just stay on the field stunned. (Also note that you'll want to use Lazarus Pit before the wrap-up starts, as that's when you can play effects. :))

Ra's would not recover. Lazuras pits only say that the character cannot be KO'd and your only allowed to recover 1 character in the recovery phase.

Also note that KOing a character is different than placing a character in your KO'd pile.

Why do I say this? Because a trick I used to try before I really knew the rules was to Lazarus Pit a stunned Ra's when I went to replace Ra's. In other words, I had 4-drop Ra's stunned, I Lazarus him, and play 6-drop Ra's. I thought this would get me 2 copies of Ra's. The difference is that replacing a character does not KO the character. It places the character in your KO'd pile.