According to Kojima, this character is not Colonel Campbell

One character that appeared in the new MGSV trailers has people debating: a man with sunglasses wearing a Diamond Dogs beret. Some argued this may be Colonel Campbell, but if we are to believe Kojima, it’s not him.

During an E3 interview a journalist of Game Informer asked Kojima about it, and he answered Colonel Campbell was not in the trailer. Let round two of the speculation begin!

Source: Game Informer