Talk:Chains of Harrow/@comment-25178487-20170630123931/@comment-25254386-20170702161421

To me it seems almost like the father of your Tenno was 'corrupted' by the Void itself, and eventually became a medium for the Void to interact with the Tenno directly.

As seen in TWW when your Tenno is remembering their past the father endears them as "kiddo". And at the end the father momentarily possesses your Tenno and says something based on your alignment.

And he did so again at the end of The Chains of Harrow (which btw was probably the scariest part of the quest), once again endearing the Tenno as "kiddo". I think it's safe to say the father is the Man in the Wall and acts as the Void's surrogate, acting out its will.