What Is The Watcher? (Doctor Who)

Regenerations of the Doctor have never been a smooth process but once stands out to me even among the most turbulent of changes.
What on earth (or space) is with the Watcher?

Lets look at a couple of theories about the enigmatic apparition who stalked the Doctor and his companions prior to the end of his 4th life and maybe shed some light on it.

IF YOU LIKE THIS MAYBE TRY:
Who was Rassilon?
https://youtu.be/Q10_CyuOTxg

My thoughts on 13th Doctor:
https://youtu.be/8RGY_2VosKw
Doctor Who, Doctor Who emblem, BBC logo, soundtrack, and all other asssetts are property of the British Broadcasting Corporation.
Music from bensound.com and purple-planet.com and freesfx.co.uk
This Video is for educational purposes with commentary.

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