Jesus and his Apostles - 12 > 11 > ? (edited)

 There are some gaps in knowledge of Jesus' inner band after his resurrection. In the telling after the crucifixion its description was changed.

When is twelve not twelve? Does it matter?

These rock stacks, strangely, are called "The Twelve Apostles". They are a tourist attraction off the coast of Victoria, Australia. (They have their own Marine National Park.). I suppose once there were 12. The ocean has been working on their removal! Itinerant Jesus had a specific band of 12 men.

Judas, Tragic Betrayer of Jesus (revised 2)

A despairing man - Judas, who slipped away from Jesus.

I think that Judas’ sad end of life at a rope's end is fairly well known.. was it necessary? why did he?