No. It's twelve.
Judas got greedy and impatient so tried to force Jesus to take over the kingdom. If the choice was take over in power as the messiah or death, of course he would take over, right? He's the messiah. He can't die lol.
The instant he realized Jesus wasn't going to fight back or take over he went and confessed that he had taken money and condemned a innocent man. Which should have resulted in Jesus being freed and him dying as I recall.
But the priests broke their own rules and said they didn't care. Go away, we're killing Jesus.
Then Judas killed himself.
Judas's story is a tragedy. Trying to force something good to happen for the wrong reasons and having it blow up in your face in the worst way possible. And yet if he hadn't given into despair and ended his life he could have asked Jesus himself for forgiveness when he rose again.
A cautionary tale not to do wrong for what you think are good reasons or to try and cause good outcomes on your own for the wrong reasons. And to not give into despair and give up after making terrible mistakes.