Vladimir is consider the responsible one.
Vladimir is demanding goes straight to the point.
Vlaimir is often unsure about his memories.
Didi is very demanding when he is talking about something. Such as when Gogo thought the willow was a bush, he stuck to what he knew until Gogo finally agreed. Also he told him that they were gonna stay there and wait for Godot, the whole time Gogo did not want to stay. When it comes to Didi speaking about the bible, he makes a point that everyone believes that because that is the only version they know. When Gogo doesn't agree with that, Didi continues to push the point.