Ramayana - Vibhishan's character

How do you characterize Vibhishan in Ramayana?

I think the answer depends from what perspective we look at him:

• Ravana's point of view: Vibhishan is a traitor. Obviously not welcomed in Lanka.

• Rama's point of view: Rama would always welcome someone like Vibhisan. Being a native of Lanka, Vibhishan was fully aware of weaknesses and strategies of Lankan army. So for the opponent side, friendship with him is fruitful.

Also note that, as soon as Rama won the battle, he took no time getting rid of Vibhishan by making him the king of Lanka ; as it is not wise enough to keep a person like him on selfside.

• Vibhishan's own point of view: Ravana was a successful king, Lanka flourished in his rule. It was next to impossible for Vibhishan to dethrone Ravana himself and take over Lanka. Friendship with Rama turns out to be the best deal for him to get the throne.