Chin Yang

After The Three Masters, more than twenty believed Senseis or less have ruled the Dojo, identified to Antarctica as ???. It is unknown if it was true or not.

Controversy
The controversy behind this thing is that some claim that The Three Masters passed the Dojo on to Pen Chi, which had ran away to an area known as Japan. However, as said in the description, it was unsure whether Pen Chi followed the suit or another, unidentified penguin in the Uncharted lands of Antarctica.

It is unknown as of now.